{"id":5139,"date":"2026-09-19T15:15:14","date_gmt":"2026-09-19T15:15:14","guid":{"rendered":"https:\/\/crystals.rocks\/"},"modified":"2026-09-19T15:15:14","modified_gmt":"2026-09-19T15:15:14","slug":"naldrettite","status":"publish","type":"post","link":"https:\/\/crystals.rocks\/vi\/article\/naldrettite\/","title":{"rendered":"Naldrettite"},"content":{"rendered":"

Naldrettite l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t hi\u1ebfm ch\u1ee9a palladium v\u00e0 antimony v\u1edbi c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc Pd\u2082Sb. N\u00f3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 kho\u00e1ng ch\u1ea5t palladium, kho\u00e1ng ch\u1ea5t antimonide v\u00e0 kho\u00e1ng ch\u1ea5t nh\u00f3m\u94c2. Naldrettite th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng h\u1ea1t vi m\u00f4 trong c\u00e1c m\u1ecf qu\u1eb7ng gi\u00e0u sulfua, \u0111\u00e1 n\u00fai l\u1eeda mafic v\u00e0 ultramafic, h\u1ec7 th\u1ed1ng th\u1ee7y nhi\u1ec7t, v\u00e0 c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u1ecba ch\u1ea5t kh\u00e1c ch\u1ee9a palladium v\u00e0 antimony.<\/p>\n

\"Naldrettite\"
Naldrettite<\/figcaption><\/figure>\n

Kho\u00e1ng ch\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y nh\u01b0 m\u1ed9t giai \u0111o\u1ea1n ph\u1ee5 ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 kho\u00e1ng ch\u1ea5t ch\u00ednh t\u1ea1o th\u00e0nh \u0111\u00e1. C\u00e1c h\u1ea1t ri\u00eang l\u1ebb th\u01b0\u1eddng r\u1ea5t nh\u1ecf, th\u00f4ng th\u01b0\u1eddng d\u01b0\u1edbi v\u00e0i tr\u0103m micromet, v\u00e0 th\u01b0\u1eddng g\u1eafn v\u1edbi ho\u1eb7c \u0111\u01b0\u1ee3c bao b\u1ecdc b\u1edfi c\u00e1c kho\u00e1ng ch\u1ea5t sunfua. Do k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf v\u00e0 m\u1ed1i li\u00ean h\u1ec7 g\u1ea7n g\u0169i v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t nh\u00f3m\u94c2, naldrettite th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua k\u00ednh hi\u1ec3n vi ph\u1ea3n x\u1ea1, ph\u00e2n t\u00edch b\u1eb1ng m\u00e1y vi ph\u1ed5 \u0111i\u1ec7n t\u1eed v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p tinh th\u1ec3 h\u1ecdc.<\/p>\n

Naldrettite thu\u1ed9c nh\u00f3m c\u00e1c kho\u00e1ng ch\u1ea5t c\u1ee7a nguy\u00ean t\u1ed1 nh\u00f3m\u94c2. Th\u00e0nh ph\u1ea7n c\u1ee7a n\u00f3 ch\u1ee7 y\u1ebfu l\u00e0 palladium v\u00e0 antimony, m\u1eb7c d\u00f9 c\u00e1c l\u01b0\u1ee3ng nh\u1ecf platinum, arsenic, s\u1eaft v\u00e0 l\u01b0u hu\u1ef3nh c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n trong c\u00e1c m\u1eabu t\u1ef1 nhi\u00ean. Th\u00e0nh ph\u1ea7n l\u00fd t\u01b0\u1edfng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1edfi Pd\u2082Sb, trong khi c\u00e1c h\u1ea1t \u0111\u00e3 ph\u00e2n t\u00edch c\u00f3 th\u1ec3 cho th\u1ea5y s\u1ef1 thay th\u1ebf h\u00f3a h\u1ecdc h\u1ea1n ch\u1ebf.<\/p>\n

Kho\u00e1ng ch\u1ea5t n\u00e0y c\u00f3 v\u1ebb ngo\u00e0i kh\u00f4ng trong v\u00e0 kim lo\u1ea1i. D\u01b0\u1edbi \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 ph\u00e2n c\u1ef1c ph\u1eb3ng, n\u00f3 th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n m\u00e0u tr\u1eafng kem s\u00e1ng. N\u00f3 c\u00f3 c\u1ea5u tr\u00fac orthorhombic v\u00e0 thu\u1ed9c nh\u00f3m kh\u00f4ng gian Cmc2\u2081<\/strong>. Kh\u00e1c v\u1edbi nhi\u1ec1u lo\u1ea1i kho\u00e1ng s\u1ea3n s\u01b0u t\u1eadp kh\u00e1c, naldrettite kh\u00f4ng xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng tinh th\u1ec3 l\u1edbn c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y v\u00e0 kh\u00f4ng c\u00f3 c\u00f4ng d\u1ee5ng l\u00e0m \u0111\u00e1 qu\u00fd \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.<\/p>\n

L\u1ecbch s\u1eed v\u00e0 t\u00ean g\u1ecdi c\u1ee7a Naldrettite<\/h2>\n

Naldrettite \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 l\u1ea7n \u0111\u1ea7u ti\u00ean l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t m\u1edbi v\u00e0o n\u0103m 2005. V\u1eadt li\u1ec7u m\u1eabu \u0111\u1ebfn t\u1eeb c\u00e1c N\u1ed9p ti\u1ec1n Mesamax Northwest<\/strong> trong d\u1ea3i N\u1ebfp g\u1ea5p Cape Smith c\u1ee7a khu v\u1ef1c Ungava \u1edf ph\u00eda b\u1eafc t\u1ec9nh Quebec, Canada.<\/p>\n

Kho\u00e1ng v\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean theo Anthony J. Naldrett<\/strong>, m\u1ed9t nh\u00e0 \u0111\u1ecba ch\u1ea5t n\u1ed5i ti\u1ebfng v\u1edbi c\u00f4ng vi\u1ec7c c\u1ee7a \u00f4ng v\u1ec1 c\u00e1c t\u00e0i nguy\u00ean sulfide magma, qu\u1eb7ng \u0111\u1ed3ng-niken v\u00e0 kho\u00e1ng h\u00f3a c\u00e1c nguy\u00ean t\u1ed1 nh\u00f3m\u94c2. Nghi\u00ean c\u1ee9u c\u1ee7a \u00f4ng \u0111\u00e3 \u0111\u00f3ng g\u00f3p v\u00e0o vi\u1ec7c hi\u1ec3u bi\u1ebft c\u00e1ch c\u00e1c qu\u1eb7ng sulfide h\u00ecnh th\u00e0nh trong m\u00f4i tr\u01b0\u1eddng n\u00fai l\u1eeda mafic v\u00e0 ultramafic.<\/p>\n

M\u00f4 t\u1ea3 ban \u0111\u1ea7u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh naldrettite l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t kim lo\u1ea1i m\u1edbi li\u00ean quan \u0111\u1ebfn m\u1ed9t t\u1eadp h\u1ee3p ph\u1ee9c t\u1ea1p c\u1ee7a sulfide, kho\u00e1ng ch\u1ea5t nh\u00f3m\u94c2, telluride, antimonide v\u00e0 kho\u00e1ng ch\u1ea5t bi\u1ebfn \u0111\u1ed5i. Vi\u1ec7c ph\u00e1t hi\u1ec7n d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, h\u00e0nh vi quang h\u1ecdc, c\u1ea5u tr\u00fac tinh th\u1ec3 v\u00e0 m\u1ed1i quan h\u1ec7 v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t kh\u00e1c trong qu\u1eb7ng.<\/p>\n

K\u1ec3 t\u1eeb m\u00f4 t\u1ea3 ban \u0111\u1ea7u, naldrettite v\u1edbi th\u00e0nh ph\u1ea7n gi\u1ed1ng nhau ho\u1eb7c li\u00ean quan ch\u1eb7t ch\u1ebd \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o t\u1eeb nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng \u0111\u1ecba ch\u1ea5t b\u1ed5 sung. Nh\u1eefng m\u00f4i tr\u01b0\u1eddng n\u00e0y bao g\u1ed3m c\u00e1c m\u1ecf nickel-k\u1ebdm-\u0111\u1ed3ng-nh\u00f3m nguy\u00ean t\u1ed1\u94c2, c\u00e1c m\u1ea1ch th\u1ee7y nhi\u1ec7t li\u00ean quan \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u0111\u1ed3ng-v\u00e0ng porphyry, c\u00e1c kh\u1ed1i intruzi c\u00f3 ph\u00e2n t\u1ea7ng ki\u1ec3u Alaska, c\u00e1c chromit b\u1ecb bi\u1ebfn \u0111\u1ed5i, v\u00e0 c\u00e1c m\u00f4i tr\u01b0\u1eddng metasomatic ho\u1eb7c bi\u1ebfn ch\u1ea5t kh\u00e1c.<\/p>\n

H\u00ecnh th\u00e0nh v\u00e0 S\u1ef1 xu\u1ea5t hi\u1ec7n \u0111\u1ecba ch\u1ea5t c\u1ee7a Naldrettite<\/h2>\n

Naldrettite h\u00ecnh th\u00e0nh trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111\u1ecba ch\u1ea5t n\u01a1i palladium v\u00e0 antimony \u0111\u01b0\u1ee3c t\u1eadp trung v\u00e0 c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p trong qu\u00e1 tr\u00ecnh tinh th\u1ec3 h\u00f3a ho\u1eb7c bi\u1ebfn \u0111\u1ed5i c\u1ee7a c\u00e1c kho\u00e1ng v\u1eadt qu\u1eb7ng. S\u1ef1 h\u00ecnh th\u00e0nh c\u1ee7a n\u00f3 th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn giai \u0111o\u1ea1n cu\u1ed1i c\u1ee7a tinh th\u1ec3 h\u00f3a magma, bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t th\u1ee7y ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng metasomatic.<\/p>\n

Lo\u1ea1i xu\u1ea5t hi\u1ec7n t\u1ea1i m\u1ecf Mesamax Northwest n\u1eb1m g\u1ea7n c\u00e1c m\u00e9p c\u1ee7a c\u00e1c \u0111\u00ea-\u0111i basalt. Naldrettite xu\u1ea5t hi\u1ec7n c\u00f9ng v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t sulfide nh\u01b0 pyrrhotite, pentlandite, chalcopyrite, galena, sphalerite v\u00e0 cobaltite. N\u00f3 c\u0169ng li\u00ean quan \u0111\u1ebfn clinochlore, magnetite, sudburyite, electrum, altaite, sperrylite, michenerite, petzite v\u00e0 hessite.<\/p>\n

Trong m\u00f4i tr\u01b0\u1eddng n\u00e0y, palladium c\u00f3 th\u1ec3 t\u1eadp trung trong m\u1ed9t dung d\u1ecbch sulfide gi\u00e0u ho\u1eb7c trong c\u00e1c ch\u1ea5t l\u1ecfng giai \u0111o\u1ea1n cu\u1ed1i. Antimony v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 d\u1ec5 bay h\u01a1i kh\u00e1c c\u00f3 th\u1ec3 tr\u1edf n\u00ean di \u0111\u1ed9ng trong qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i v\u00e0 bi\u1ebfn \u0111\u1ed5i. Khi \u0111i\u1ec1u ki\u1ec7n h\u00f3a h\u1ecdc ph\u00f9 h\u1ee3p, palladium v\u00e0 antimony c\u00f3 th\u1ec3 k\u1ebft t\u1ee7a d\u01b0\u1edbi d\u1ea1ng naldrettite.<\/p>\n

C\u00e1c nghi\u00ean c\u1ee9u sau n\u00e0y \u0111\u00e3 ghi nh\u1eadn naldrettite trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng \u0111\u1ecba ch\u1ea5t kh\u00e1c nhau. N\u00f3 th\u01b0\u1eddng li\u00ean quan nh\u1ea5t v\u1edbi c\u00e1c t\u00e0i nguy\u00ean sulfide Ni-Cu-PGE magmatic, n\u01a1i c\u00e1c nguy\u00ean t\u1ed1 nh\u00f3m\u94c2 \u0111\u01b0\u1ee3c t\u1eadp trung trong qu\u00e1 tr\u00ecnh t\u00e1ch v\u00e0 k\u1ebft tinh c\u1ee7a dung d\u1ecbch sulfide. N\u00f3 c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o t\u1eeb c\u00e1c m\u1ea1ch th\u1ee7y nhi\u1ec7t trong h\u1ec7 th\u1ed1ng \u0111\u1ed3ng-v\u00e0ng porphyry v\u00e0 t\u1eeb c\u00e1c t\u00e0i nguy\u00ean nguy\u00ean t\u1ed1 nh\u00f3m\u94c2 li\u00ean quan \u0111\u1ebfn c\u00e1c kh\u1ed1i intruzi c\u00f3 ph\u00e2n t\u1ea7ng ki\u1ec3u Alaska.<\/p>\n

C\u00e1c tr\u01b0\u1eddng h\u1ee3p \u0111\u01b0\u1ee3c ghi nh\u1eadn kh\u00e1c bao g\u1ed3m qu\u1eb7ng sunfua antimon-arsenit chuy\u1ec3n h\u00f3a, qu\u1eb7ng niken-oxit bi\u1ebfn ch\u1ea5t v\u00e0 chromit d\u1ea1ng \u1ed1ng. C\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u00e0y cho th\u1ea5y r\u1eb1ng naldrettite kh\u00f4ng b\u1ecb gi\u1edbi h\u1ea1n trong m\u1ed9t lo\u1ea1i \u0111\u00e1 ho\u1eb7c m\u00f4 h\u00ecnh khai th\u00e1c c\u1ee5 th\u1ec3 n\u00e0o.<\/p>\n

\u1ede m\u1ed9t s\u1ed1 khu v\u1ef1c, naldrettite d\u01b0\u1eddng nh\u01b0 \u0111\u00e3 h\u00ecnh th\u00e0nh trong giai \u0111o\u1ea1n th\u1ee7y nhi\u1ec7t sau phun tr\u00e0o n\u00fai l\u1eeda. C\u00e1c ch\u1ea5t l\u1ecfng ch\u1ee9a palladium, antimony, arsenic, bismuth ho\u1eb7c tellurium c\u00f3 th\u1ec3 di chuy\u1ec3n qua c\u00e1c khe n\u1ee9t v\u00e0 \u0111\u00e1 b\u1ecb bi\u1ebfn \u0111\u1ed5i v\u00e0 k\u1ebft t\u1ee7a c\u00e1c kho\u00e1ng ch\u1ea5t nh\u00f3m\u94c2 t\u1ea1i nhi\u1ec7t \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p.<\/p>\n

M\u1ed9t s\u1ef1 ki\u1ec7n \u0111\u01b0\u1ee3c ghi nh\u1eadn t\u1ea1i Luanga Complex c\u1ee7a Brazil li\u00ean quan \u0111\u1ebfn chromitite trong m\u1ed9t kh\u1ed1i x\u00e2m nh\u1eadp l\u1edbp th\u1eddi Ti\u1ec1n Cambri mu\u1ed9n c\u1ee7a V\u00f9ng Kho\u00e1ng s\u1ea3n Caraj\u00e1s. T\u1ea1i s\u1ef1 ki\u1ec7n \u0111\u00f3, naldrettite li\u00ean quan \u0111\u1ebfn ferrianchromite, hydroxit s\u1eaft v\u00e0 clorit. T\u1ed5 h\u1ee3p kho\u00e1ng v\u1eadt cho th\u1ea5y h\u00ecnh th\u00e0nh t\u1eeb c\u00e1c dung d\u1ecbch bi\u1ebfn ch\u1ea5t ho\u1eb7c th\u1ee7y nhi\u1ec7t, v\u1edbi qu\u00e1 tr\u00ecnh k\u1ebft tinh x\u1ea3y ra d\u01b0\u1edbi kho\u1ea3ng 350 \u00b0C.<\/p>\n

Naldrettite trong c\u00e1c kho\u00e1ng s\u1ea3n nguy\u00ean t\u1ed1 nh\u00f3m\u94c2<\/h2>\n

Naldrettite l\u00e0 m\u1ed9t trong s\u1ed1 c\u00e1c kho\u00e1ng ch\u1ea5t c\u00f3 th\u1ec3 ch\u1ee9a ho\u1eb7c ghi l\u1ea1i paladi trong qu\u1eb7ng ch\u1ee9a c\u00e1c nguy\u00ean t\u1ed1 nh\u00f3m\u94c2. Paladi th\u01b0\u1eddng di \u0111\u1ed9ng h\u01a1n m\u1ed9t s\u1ed1 nguy\u00ean t\u1ed1 nh\u00f3m\u94c2 kh\u00e1c, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i th\u1ee7y nhi\u1ec7t v\u00e0 t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c dung d\u1ecbch mang kh\u00ed.<\/p>\n

Trong c\u00e1c t\u00e0i nguy\u00ean sulfua magma, naldrettite c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n sau qu\u00e1 tr\u00ecnh k\u1ebft tinh ch\u00ednh c\u1ee7a c\u00e1c kho\u00e1ng ch\u1ea5t sulfua. Kho\u00e1ng ch\u1ea5t n\u00e0y c\u00f3 th\u1ec3 b\u00e1m v\u00e0o pyrrhotite, pentlandite, chalcopyrite ho\u1eb7c c\u00e1c sulfua kh\u00e1c, ho\u1eb7c c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n d\u1ecdc theo ranh gi\u1edbi h\u1ea1t v\u00e0 khe n\u1ee9t.<\/p>\n

S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a naldrettite trong m\u1ed9t m\u1eabu qu\u1eb7ng do \u0111\u00f3 c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn nhi\u1ec1u giai \u0111o\u1ea1n h\u00ecnh th\u00e0nh kho\u00e1ng v\u1eadt. N\u00f3 c\u00f3 th\u1ec3 h\u00ecnh th\u00e0nh trong giai \u0111o\u1ea1n magmatic mu\u1ed9n khi c\u00e1c dung d\u1ecbch c\u00f2n l\u1ea1i tr\u1edf n\u00ean gi\u00e0u c\u00e1c nguy\u00ean t\u1ed1 kh\u00f4ng t\u01b0\u01a1ng th\u00edch, trong giai \u0111o\u1ea1n bi\u1ebfn ch\u1ea5t khi c\u00e1c ch\u1ea5t l\u1ecfng v\u1eadn chuy\u1ec3n palladium v\u00e0 antimony, ho\u1eb7c trong c\u00e1c ph\u1ea3n \u1ee9ng bi\u1ebfn ch\u1ea5t v\u00e0 metasomatic l\u00e0m thay \u0111\u1ed5i m\u1ed9t t\u1eadp h\u1ee3p kho\u00e1ng v\u1eadt tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n

Naldrettite th\u01b0\u1eddng hi\u1ec7n di\u1ec7n \u1edf nh\u1eefng l\u01b0\u1ee3ng r\u1ea5t nh\u1ecf. N\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c khai th\u00e1c ri\u00eang bi\u1ec7t nh\u01b0 m\u1ed9t qu\u1eb7ng palladium. Thay v\u00e0o \u0111\u00f3, n\u00f3 xu\u1ea5t hi\u1ec7n nh\u01b0 m\u1ed9t kho\u00e1ng ch\u1ea5t ph\u1ee5 trong c\u00e1c m\u1ecf c\u00f3 th\u1ec3 ch\u1ee9a m\u1ed9t t\u1eadp h\u1ee3p r\u1ed9ng h\u01a1n c\u00e1c kho\u00e1ng ch\u1ea5t nh\u00f3m\u94c2 v\u00e0 c\u00e1c sulfua kim lo\u1ea1i c\u01a1 b\u1ea3n.<\/p>\n

C\u1ea5u tr\u00fac tinh th\u1ec3 v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m kho\u00e1ng v\u1eadt c\u1ee7a Naldrettite<\/h2>\n

Naldrettite thu\u1ed9c v\u1ec1 h\u1ec7 tinh th\u1ec3 orthorhombic<\/strong>. Nh\u00f3m kh\u00f4ng gian \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o l\u00e0 Cmc2\u2081<\/strong>, v\u00e0 c\u00e1c tham s\u1ed1 t\u1ebf b\u00e0o \u0111\u01a1n v\u1ecb kho\u1ea3ng a = 3,3906 \u00c5, b = 17,5551 \u00c5, v\u00e0 c = 6,957 \u00c5.<\/p>\n

C\u1ea5u tr\u00fac orthorhombic ch\u1ee9a ba tr\u1ee5c tinh th\u1ec3 h\u1ecdc giao nhau t\u1ea1i g\u00f3c vu\u00f4ng nh\u01b0ng c\u00f3 \u0111\u1ed9 d\u00e0i kh\u00e1c nhau. C\u1ea5u tr\u00fac n\u00e0y kh\u00e1c bi\u1ec7t v\u1edbi c\u1ea5u tr\u00fac c\u1ee7a c\u00e1c antimonide palladium kh\u00e1c, ngay c\u1ea3 khi c\u00e1c th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc t\u01b0\u01a1ng t\u1ef1.<\/p>\n

\"Naldrettite\"
Naldrettite<\/figcaption><\/figure>\n

Naldrettite th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng c\u00e1c h\u1ea1t kh\u00f4ng c\u00f3 m\u1eb7t tinh th\u1ec3 b\u00ean ngo\u00e0i ho\u00e0n ch\u1ec9nh. C\u00e1c h\u1ea1t kh\u00f4ng c\u00f3 m\u1eb7t tinh th\u1ec3 b\u00ean ngo\u00e0i ho\u00e0n ch\u1ec9nh v\u00ec ch\u00fang h\u00ecnh th\u00e0nh gi\u1eefa c\u00e1c kho\u00e1ng ch\u1ea5t tr\u01b0\u1edbc \u0111\u00f3, d\u1ecdc theo c\u00e1c ranh gi\u1edbi h\u1ea1t, ho\u1eb7c trong c\u00e1c kho\u1ea3ng tr\u1ed1ng trong m\u1ed9t t\u1eadp h\u1ee3p qu\u1eb7ng. C\u00e1c h\u1ea1t c\u00f3 th\u1ec3 d\u00ednh v\u1edbi sulfide, \u0111\u01b0\u1ee3c t\u1ea1o h\u00ecnh xung quanh c\u00e1c h\u1ea1t sulfide, ho\u1eb7c \u0111\u01b0\u1ee3c bao b\u1ecdc b\u1edfi c\u00e1c kho\u00e1ng ch\u1ea5t bi\u1ebfn \u0111\u1ed5i.<\/p>\n

M\u1ed9t s\u1ed1 h\u1ea1t c\u00f3 b\u1eb1ng ch\u1ee9ng v\u1ec1 \u0111\u00f4i tinh th\u1ec3 ph\u00e2n c\u1ef1c do \u1ee9ng su\u1ea5t g\u00e2y ra. S\u1ef1 \u0111\u00f4i tinh th\u1ec3 ph\u1ea3n \u00e1nh m\u1ed1i quan h\u1ec7 \u0111\u1ecbnh h\u01b0\u1edbng gi\u1eefa c\u00e1c ph\u1ea7n c\u1ee7a c\u1ea5u tr\u00fac tinh th\u1ec3 v\u00e0 c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n do \u1ee9ng su\u1ea5t b\u00ean trong ho\u1eb7c thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n kho\u00e1ng ch\u1ea5t.<\/p>\n

Kho\u00e1ng ch\u1ea5t n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y \u1edf g\u1ea7n li\u00ean quan v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t nh\u00f3m b\u1ea1ch kim kh\u00e1c. Nh\u1eefng m\u1ed1i quan h\u1ec7 n\u00e0y quan tr\u1ecdng v\u00ec c\u00e1c kho\u00e1ng ch\u1ea5t ch\u1ee9a palladium c\u00f3 th\u1ec3 c\u00f3 ngo\u1ea1i h\u00ecnh t\u01b0\u01a1ng t\u1ef1 trong c\u00e1c ph\u1ea7n m\u00e0i. Do \u0111\u00f3, vi\u1ec7c x\u00e1c \u0111\u1ecbnh kho\u00e1ng ch\u1ea5t \u0111\u00f2i h\u1ecfi d\u1eef li\u1ec7u h\u00f3a h\u1ecdc v\u00e0 c\u1ea5u tr\u00fac ngo\u00e0i vi\u1ec7c quan s\u00e1t quang h\u1ecdc.<\/p>\n

M\u00e0u s\u1eafc, \u0111\u1ed9 b\u00f3ng v\u00e0 t\u00ednh ch\u1ea5t quang h\u1ecdc c\u1ee7a Naldrettite<\/h2>\n

Naldrettite l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t kh\u00f4ng trong su\u1ed1t v\u1edbi \u00e1nh kim lo\u1ea1i. Trong k\u00ednh hi\u1ec3n vi ph\u1ea3n chi\u1ebfu \u00e1nh s\u00e1ng, n\u00f3 th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n m\u00e0u tr\u1eafng s\u1eefa s\u00e1ng, \u0111\u1eb7c bi\u1ec7t khi \u0111\u01b0\u1ee3c quan s\u00e1t c\u00f9ng v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t nh\u01b0 pentlandite, pyrrhotite, clinochlore v\u00e0 chalcopyrite.<\/p>\n

\u0110\u00e1 kh\u00f4ng c\u00f3 t\u00ednh pleochroic, ngh\u0129a l\u00e0 n\u00f3 kh\u00f4ng th\u1ec3 hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i r\u00f5 r\u1ec7t v\u1ec1 m\u00e0u s\u1eafc ph\u1ea3n chi\u1ebfu khi stage k\u00ednh hi\u1ec3n vi \u0111\u01b0\u1ee3c xoay d\u01b0\u1edbi \u00e1nh s\u00e1ng ph\u00e2n c\u1ef1c ph\u1eb3ng. N\u00f3 c\u00f3 t\u00ednh d\u1ecb h\u01b0\u1edbng r\u00f5 r\u1ec7t, v\u00ec v\u1eady \u0111\u1ed9 s\u00e1ng ho\u1eb7c m\u00e0u s\u1eafc c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 thay \u0111\u1ed5i d\u01b0\u1edbi c\u00e1c tia ph\u00e2n c\u1ef1c ch\u00e9o khi h\u01b0\u1edbng h\u1ea1t thay \u0111\u1ed5i.<\/p>\n

Naldrettite c\u00f3 \u0111\u1ed9 ph\u1ea3n chi\u1ebfu hai h\u01b0\u1edbng y\u1ebfu. \u0110\u1ed9 ph\u1ea3n chi\u1ebfu hai h\u01b0\u1edbng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 ph\u1ea3n chi\u1ebfu \u0111\u01b0\u1ee3c quan s\u00e1t khi kho\u00e1ng ch\u1ea5t \u0111\u01b0\u1ee3c nh\u00ecn \u1edf c\u00e1c h\u01b0\u1edbng kh\u00e1c nhau. \u1ede naldrettite, hi\u1ec7u \u1ee9ng n\u00e0y th\u01b0\u1eddng y\u1ebfu nh\u01b0ng c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 trong vi\u1ec7c so s\u00e1nh v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t nh\u00f3m\u94c2 t\u01b0\u01a1ng t\u1ef1 v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c.<\/p>\n

Kh\u00f4ng c\u00f3 ph\u1ea3n x\u1ea1 n\u1ed9i b\u1ed9 n\u00e0o r\u00f5 r\u1ec7t th\u01b0\u1eddng \u0111\u01b0\u1ee3c quan s\u00e1t. V\u00ec kho\u00e1ng ch\u1ea5t n\u00e0y kh\u00f4ng trong su\u1ed1t, c\u00e1c \u0111\u1eb7c t\u00ednh \u00e1nh s\u00e1ng truy\u1ec1n nh\u01b0 \u0111\u1ed9 trong v\u00e0 h\u00e0nh vi kh\u00fac x\u1ea1 kh\u00f4ng \u00e1p d\u1ee5ng theo c\u00e1ch gi\u1ed1ng nh\u01b0 \u0111\u1ed1i v\u1edbi c\u00e1c vi\u00ean \u0111\u00e1 qu\u00fd trong su\u1ed1t.<\/p>\n

Gi\u00e1 tr\u1ecb ph\u1ea3n x\u1ea1 \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o t\u0103ng theo b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n. Trong kh\u00f4ng kh\u00ed, gi\u00e1 tr\u1ecb ph\u1ea3n x\u1ea1 kho\u1ea3ng 49,0\u201350,9% \u1edf 470 nm, 53,2\u201355,1% \u1edf 546 nm, 55,4\u201357,5% \u1edf 589 nm v\u00e0 58,5\u201360,1% \u1edf 650 nm. Trong d\u1ea7u ng\u00e2m, c\u00e1c gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng th\u1ea5p h\u01a1n. Nh\u1eefng ph\u00e9p \u0111o n\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t qu\u1eb7ng kh\u00f4ng trong su\u1ed1t kh\u00e1c trong ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n

T\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a Naldrettite<\/h2>\n

Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc l\u00fd t\u01b0\u1edfng c\u1ee7a naldrettite \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1edfi Pd\u2082Sb<\/strong>. C\u00e1c h\u1ea1t ng\u0169 c\u1ed1c t\u1ef1 nhi\u00ean c\u00f3 th\u1ec3 ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf b\u1ea1ch kim, asen, s\u1eaft v\u00e0 l\u01b0u hu\u1ef3nh. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, b\u1ea1ch kim thay th\u1ebf m\u1ed9t ph\u1ea7n cho palladium v\u00e0 asen thay th\u1ebf m\u1ed9t ph\u1ea7n cho antimony.<\/p>\n

V\u1eadt li\u1ec7u m\u1eabu ban \u0111\u1ea7u ch\u1ee9a kho\u1ea3ng 63,49% tr\u1ecdng l\u01b0\u1ee3ng palladium v\u00e0 35,75% tr\u1ecdng l\u01b0\u1ee3ng antimony, v\u1edbi m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf s\u1eaft, asen v\u00e0 l\u01b0u hu\u1ef3nh. T\u1ed5ng ph\u00e2n t\u00edch g\u1ea7n b\u1eb1ng 100% tr\u1ecdng l\u01b0\u1ee3ng, ph\u00f9 h\u1ee3p v\u1edbi th\u00e0nh ph\u1ea7n l\u00fd t\u01b0\u1edfng Pd\u2082Sb.<\/p>\n

Naldrettite l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t \u0111\u1eb7c v\u00ec palladium v\u00e0 antimony \u0111\u1ec1u l\u00e0 c\u00e1c nguy\u00ean t\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i n\u1eb7ng. M\u1eadt \u0111\u1ed9 \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n c\u1ee7a n\u00f3 kho\u1ea3ng 10,694 g\/cm\u00b3<\/strong>M\u1eadt \u0111\u1ed9 cao gi\u00fap ph\u00e2n bi\u1ec7t n\u00f3 v\u1edbi nhi\u1ec1u kho\u00e1ng ch\u1ea5t sulfide v\u00e0 silicate th\u00f4ng th\u01b0\u1eddng, m\u1eb7c d\u00f9 m\u1eadt \u0111\u1ed9 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c \u0111o tr\u1ef1c ti\u1ebfp tr\u00ean c\u00e1c h\u1ea1t vi m\u00f4 ri\u00eang l\u1ebb.<\/p>\n

\u0110\u00e1 c\u00f3 \u0111\u1ed9 c\u1ee9ng Mohs kho\u1ea3ng 4 \u0111\u1ebfn 5<\/strong>M\u1ed9t \u0111\u1ed9 c\u1ee9ng vi m\u00f4 trung b\u00ecnh kho\u1ea3ng 393 kg\/mm\u00b2 \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o. Naldrettite kh\u00f4ng c\u00f3 m\u1eb7t ph\u1eb3ng t\u00e1ch r\u00f5 r\u00e0ng, v\u00e0 v\u1ee1 c\u1ee7a n\u00f3 l\u00e0 kh\u00f4ng \u0111\u1ec1u. T\u00ednh b\u1ec1n c\u1ee7a n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 l\u00e0 d\u1ebbo v\u00e0 kh\u00f4ng \u0111\u00e0n h\u1ed3i linh ho\u1ea1t, \u0111i\u1ec1u n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi t\u00ednh ch\u1ea5t kim lo\u1ea1i c\u1ee7a n\u00f3.<\/p>\n

Naldrettite l\u00e0 v\u1eadt li\u1ec7u kh\u00f4ng trong su\u1ed1t v\u00e0 c\u00f3 t\u00ednh kim lo\u1ea1i. N\u00f3 kh\u00f4ng t\u1ea1o th\u00e0nh tinh th\u1ec3 trong su\u1ed1t v\u00e0 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c ph\u00e9p ki\u1ec3m tra \u0111\u00e1 qu\u00fd th\u00f4ng th\u01b0\u1eddng. C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u1ea9n \u0111o\u00e1n c\u1ee7a n\u00f3 ch\u1ee7 y\u1ebfu l\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, h\u00e0nh vi ph\u1ea3n chi\u1ebfu \u00e1nh s\u00e1ng, c\u1ea5u tr\u00fac tinh th\u1ec3 v\u00e0 s\u1ef1 li\u00ean quan v\u1edbi c\u00e1c kho\u00e1ng s\u1ea3n qu\u1eb7ng kh\u00e1c.<\/p>\n

C\u00e1ch X\u00e1c \u0110\u1ecbnh Naldrettite?<\/h2>\n

Naldrettite th\u01b0\u1eddng kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng quan s\u00e1t tr\u1ef1c ti\u1ebfp. C\u00e1c h\u1ea1t c\u1ee7a n\u00f3 r\u1ea5t nh\u1ecf, kh\u00f4ng trong su\u1ed1t v\u00e0 th\u01b0\u1eddng g\u1eafn v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t sunfua ho\u1eb7c \u0111\u01b0\u1ee3c bao b\u1ecdc trong c\u00e1c c\u1ea5u tr\u00fac qu\u1eb7ng ph\u1ee9c t\u1ea1p.<\/p>\n

Giai \u0111o\u1ea1n \u0111\u1ea7u ti\u00ean c\u1ee7a vi\u1ec7c x\u00e1c \u0111\u1ecbnh th\u01b0\u1eddng bao g\u1ed3m k\u00ednh hi\u1ec3n vi \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1. M\u00e0u tr\u1eafng kem s\u00e1ng, \u0111\u1ed9 b\u00f3ng kim lo\u1ea1i, kh\u1ea3 n\u0103ng ph\u1ea3n x\u1ea1 ph\u00e2n c\u1ef1c y\u1ebfu, t\u00ednh b\u1ea5t \u0111\u1eb3ng h\u01b0\u1edbng r\u00f5 r\u1ec7t v\u00e0 s\u1ef1 v\u1eafng m\u1eb7t c\u1ee7a c\u00e1c ph\u1ea3n x\u1ea1 b\u00ean trong cung c\u1ea5p b\u1eb1ng ch\u1ee9ng ban \u0111\u1ea7u. Tuy nhi\u00ean, nh\u1eefng \u0111\u1eb7c t\u00ednh n\u00e0y kh\u00f4ng \u0111\u1ee7 \u0111\u1ed9c \u0111\u00e1o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kho\u00e1ng ch\u1ea5t m\u1ed9t m\u00ecnh.<\/p>\n

Ph\u00e2n t\u00edch h\u00f3a h\u1ecdc th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng m\u00e1y ph\u00e2n t\u00edch vi khu\u1ebfch \u0111\u1ea1i \u0111i\u1ec7n t\u1eed. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 \u0111o l\u01b0\u1ee3ng palladium, antimony, platinum, arsenic, s\u1eaft, l\u01b0u hu\u1ef3nh v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c \u1edf quy m\u00f4 t\u1eebng h\u1ea1t ri\u00eang l\u1ebb. Th\u00e0nh ph\u1ea7n k\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 so s\u00e1nh v\u1edbi c\u00f4ng th\u1ee9c l\u00fd t\u01b0\u1edfng Pd\u2082Sb v\u00e0 v\u1edbi c\u00e1c m\u1eabu thay th\u1ebf \u0111\u00e3 bi\u1ebft.<\/p>\n

K\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed qu\u00e9t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 xem x\u00e9t h\u00ecnh th\u00e1i h\u1ea1t, m\u1ed1i li\u00ean h\u1ec7 v\u1edbi sulfide, c\u1ea5u tr\u00fac bi\u1ebfn \u0111\u1ed5i v\u00e0 m\u1ed1i quan h\u1ec7 v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t nh\u00f3m\u94c2 kh\u00e1c. H\u00ecnh \u1ea3nh \u0111i\u1ec7n t\u1eed ph\u1ea3n x\u1ea1 l\u00e0 \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch v\u00ec c\u00e1c kho\u00e1ng ch\u1ea5t c\u00f3 s\u1ed1 nguy\u00ean t\u1eed trung b\u00ecnh kh\u00e1c nhau cho th\u1ea5y s\u1ef1 t\u01b0\u01a1ng ph\u1ea3n trong h\u00ecnh \u1ea3nh k\u1ebft qu\u1ea3.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec5u x\u1ea1 tia X v\u00e0 nhi\u1ec5u x\u1ea1 \u0111i\u1ec7n t\u1eed cung c\u1ea5p th\u00f4ng tin v\u1ec1 c\u1ea5u tr\u00fac tinh th\u1ec3. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ph\u00e2n bi\u1ec7t naldrettite v\u1edbi c\u00e1c kho\u00e1ng ch\u1ea5t paladi-antimony c\u00f3 li\u00ean quan h\u00f3a h\u1ecdc, bao g\u1ed3m sudburyite v\u00e0 c\u00e1c antimonide kh\u00e1c.<\/p>\n

M\u1ed9t s\u1ef1 x\u00e1c \u0111\u1ecbnh \u0111\u1ea7y \u0111\u1ee7 do \u0111\u00f3 n\u00ean k\u1ebft h\u1ee3p c\u00e1c t\u00ednh ch\u1ea5t \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1, ph\u00e2n t\u00edch h\u00f3a h\u1ecdc \u0111\u1ecbnh l\u01b0\u1ee3ng, d\u1eef li\u1ec7u tinh th\u1ec3 h\u1ecdc v\u00e0 b\u1ed1i c\u1ea3nh \u0111\u1ecba ch\u1ea5t c\u1ee7a h\u1ea1t.<\/p>\n

Lo\u1ea1i v\u00e0 C\u00e1c D\u1ea1ng c\u1ee7a Naldrettite<\/h2>\n

Naldrettite \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn l\u00e0 m\u1ed9t lo\u00e0i kho\u00e1ng v\u1eadt v\u00e0 kh\u00f4ng c\u00f3 c\u00e1c bi\u1ebfn th\u1ec3 \u0111\u00e1 qu\u00fd ho\u1eb7c bi\u1ebfn th\u1ec3 m\u00e0u th\u01b0\u01a1ng m\u1ea1i ch\u00ednh th\u1ee9c \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp. C\u00e1c kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c m\u1eabu th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn s\u1ef1 thay th\u1ebf h\u00f3a h\u1ecdc, c\u1ea5u tr\u00fac h\u1ea1t, \u0111\u00e1 m\u1eb9 v\u00e0 m\u00f4i tr\u01b0\u1eddng h\u00ecnh th\u00e0nh.<\/p>\n

\"Naldrettite\"
Naldrettite<\/figcaption><\/figure>\n

Lo\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng naldrettite \u0111\u1ec1 c\u1eadp \u0111\u1ebfn v\u1eadt li\u1ec7u t\u1eeb m\u1ecf Mesamax Northwest \u1edf Qu\u00e9bec, Canada. Nh\u1eefng h\u1ea1t n\u00e0y li\u00ean quan \u0111\u1ebfn c\u00e1c sulfide, clinochlore, magnetite v\u00e0 c\u00e1c kho\u00e1ng ch\u1ea5t nh\u00f3m\u94c2 kh\u00e1c.<\/p>\n

Naldrettite li\u00ean quan \u0111\u1ebfn sulfide magma xu\u1ea5t hi\u1ec7n trong c\u00e1c m\u1ecf niken, \u0111\u1ed3ng, nguy\u00ean t\u1ed1 nh\u00f3m\u94c2 v\u00e0 th\u01b0\u1eddng g\u1eafn li\u1ec1n v\u1edbi pyrrhotite, pentlandite ho\u1eb7c chalcopyrite. Naldrettite th\u1ee7y nhi\u1ec7t xu\u1ea5t hi\u1ec7n trong c\u00e1c khe n\u1ee9t ho\u1eb7c khu v\u1ef1c \u0111\u00e3 b\u1ecb bi\u1ebfn \u0111\u1ed5i n\u01a1i palladium v\u00e0 antimony \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n b\u1edfi c\u00e1c ch\u1ea5t l\u1ecfng sau khi c\u00e1c kho\u00e1ng ch\u1ea5t n\u00fai l\u1eeda ch\u00ednh \u0111\u00e3 k\u1ebft tinh.<\/p>\n

Naldrettite li\u00ean quan \u0111\u1ebfn chromitit xu\u1ea5t hi\u1ec7n trong c\u00e1c kh\u1ed1i n\u00fai l\u1eeda si\u00eau bazan v\u00e0 c\u00e1c kh\u1ed1i n\u00fai l\u1eeda l\u1edbp, bao g\u1ed3m v\u1eadt li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn t\u1eeb T\u1ed5 ch\u1ee9c Luanga \u1edf Brazil. C\u00e1c hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn ch\u1ea5t v\u00e0 thay th\u1ebf c\u00f3 th\u1ec3 cho th\u1ea5y c\u00e1c kho\u00e1ng ch\u1ea5t li\u00ean quan kh\u00e1c nhau v\u00e0 s\u1ef1 thay th\u1ebf kh\u00e1c nhau c\u1ee7a platin ho\u1eb7c asen.<\/p>\n

C\u00e1c danh m\u1ee5c n\u00e0y m\u00f4 t\u1ea3 s\u1ef1 xu\u1ea5t hi\u1ec7n \u0111\u1ecba ch\u1ea5t ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c d\u1ea1ng \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean ch\u00ednh th\u1ee9c. C\u00e1c kh\u00e1c bi\u1ec7t h\u00f3a h\u1ecdc nh\u01b0 s\u1ef1 thay th\u1ebf m\u1ed9t ph\u1ea7n b\u1ea1ch kim cho palladium ho\u1eb7c asen cho antimony kh\u00f4ng t\u1ef1 \u0111\u1ed9ng \u0111\u1ea1i di\u1ec7n cho c\u00e1c lo\u00e0i kho\u00e1ng v\u1eadt ri\u00eang bi\u1ec7t.<\/p>\n

Naldrettit v\u00e0 C\u00e1c M\u1ecfn Kim Lo\u1ea1i Palla\u0111i Li\u00ean Quan<\/h2>\n

Naldrettite c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n c\u00f9ng v\u1edbi m\u1ed9t s\u1ed1 kho\u00e1ng ch\u1ea5t mang palladium kh\u00e1c. Sudburyite, v\u1edbi th\u00e0nh ph\u1ea7n PdSb, li\u00ean quan h\u00f3a h\u1ecdc v\u00ec n\u00f3 c\u0169ng ch\u1ee9a palladium v\u00e0 antimony. Ungavaite, v\u1edbi th\u00e0nh ph\u1ea7n Pd\u2084Sb\u2083, l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t palladium-antimony kh\u00e1c \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o t\u1eeb m\u1ecf Mesamax Northwest.<\/p>\n

C\u00e1c kho\u00e1ng v\u1eadt nh\u00f3m b\u1ea1ch kim li\u00ean quan kh\u00e1c c\u00f3 th\u1ec3 bao g\u1ed3m sperrylite, michenerite, electrum v\u00e0 c\u00e1c telluride v\u00e0 antimonide palladium kh\u00e1c nhau. Vi\u1ec7c ph\u00e2n bi\u1ec7t c\u00e1c kho\u00e1ng v\u1eadt n\u00e0y r\u1ea5t quan tr\u1ecdng v\u00ec ch\u00fang c\u00f3 th\u1ec3 c\u00f3 v\u1ebb ngo\u00e0i kim lo\u1ea1i t\u01b0\u01a1ng t\u1ef1 v\u00e0 xu\u1ea5t hi\u1ec7n trong c\u00f9ng m\u1ed9t ph\u1ea7n \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e0i b\u00f3ng.<\/p>\n

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i kho\u00e1ng v\u1eadt li\u00ean quan \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua t\u1ef7 l\u1ec7 h\u00f3a h\u1ecdc, c\u1ea5u tr\u00fac tinh th\u1ec3, t\u00ednh ch\u1ea5t quang h\u1ecdc v\u00e0 c\u00e1c m\u1eabu nhi\u1ec5u x\u1ea1. So s\u00e1nh tr\u1ef1c quan \u0111\u01a1n gi\u1ea3n kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c.<\/p>\n

C\u00f4ng d\u1ee5ng v\u00e0 Tr\u1ea1ng th\u00e1i Th\u01b0\u01a1ng m\u1ea1i c\u1ee7a Naldrettite<\/h2>\n

Naldrettite kh\u00f4ng c\u00f3 c\u00f4ng d\u1ee5ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh n\u00e0o nh\u01b0 m\u1ed9t lo\u1ea1i \u0111\u00e1 qu\u00fd, kho\u00e1ng v\u1eadt trang tr\u00ed ho\u1eb7c v\u1eadt li\u1ec7u c\u00f4ng nghi\u1ec7p. N\u00f3 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng h\u1ea1t vi m\u00f4 v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c khai th\u00e1c ho\u1eb7c ch\u1ebf bi\u1ebfn nh\u01b0 m\u1ed9t kho\u00e1ng ch\u1ea5t th\u01b0\u01a1ng m\u1ea1i ri\u00eang bi\u1ec7t.<\/p>\n

\u00dd ngh\u0129a kinh t\u1ebf c\u1ee7a n\u00f3 li\u00ean quan \u0111\u1ebfn c\u00e1c kh\u1ed1i \u0111\u00e1 \u0111\u1ecba ch\u1ea5t m\u00e0 n\u00f3 xu\u1ea5t hi\u1ec7n. Naldrettite c\u00f3 th\u1ec3 c\u00f3 m\u1eb7t trong qu\u1eb7ng ch\u1ee9a palladium, platinum, nickel, \u0111\u1ed3ng, cobalt v\u00e0 c\u00e1c kim lo\u1ea1i qu\u00fd kh\u00e1c. Tuy nhi\u00ean, kho\u00e1ng ch\u1ea5t n\u00e0y th\u01b0\u1eddng ch\u1ec9 chi\u1ebfm m\u1ed9t t\u1ef7 l\u1ec7 nh\u1ecf trong t\u1ed5ng l\u01b0\u1ee3ng qu\u1eb7ng v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a t\u1eadp h\u1ee3p kho\u00e1ng ch\u1ea5t nh\u00f3m platinum ho\u00e0n ch\u1ec9nh.<\/p>\n

S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a naldrettite c\u00f3 th\u1ec3 cung c\u1ea5p th\u00f4ng tin v\u1ec1 ph\u00e2n b\u1ed1 palladium, ho\u1ea1t t\u00ednh antimony, bi\u1ebfn \u0111\u1ed5i th\u1ee7y nhi\u1ec7t v\u00e0 s\u1ef1 ti\u1ebfn h\u00f3a giai \u0111o\u1ea1n cu\u1ed1i c\u1ee7a h\u1ec7 th\u1ed1ng h\u00ecnh th\u00e0nh qu\u1eb7ng. C\u00e1c nghi\u00ean c\u1ee9u kho\u00e1ng v\u1eadt h\u1ecdc tr\u00ean c\u00e1c m\u1eabu ch\u1ee9a naldrettite v\u00ec v\u1eady c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 trong vi\u1ec7c \u0111\u1eb7c tr\u01b0ng qu\u1eb7ng v\u00e0 c\u00e1c nghi\u00ean c\u1ee9u kho\u00e1ng v\u1eadt h\u1ecdc quy tr\u00ecnh.<\/p>\n

V\u00ec kho\u00e1ng ch\u1ea5t c\u00f3 c\u1ea5u tr\u00fac m\u1ecbn v\u00e0 li\u00ean quan ch\u1eb7t ch\u1ebd v\u1edbi sulfide, h\u00e0nh vi khai th\u00e1c c\u1ee7a n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5u tr\u00fac c\u1ee7a qu\u1eb7ng ch\u1ee7, k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh ch\u1ebf bi\u1ebfn kho\u00e1ng s\u1ea3n.<\/p>","protected":false},"excerpt":{"rendered":"

Naldrettite is a rare palladium-antimony mineral with the chemical formula Pd\u2082Sb. It is classified as a palladium mineral, an antimonide mineral, and a platinum-group mineral. Naldrettite commonly occurs as microscopic grains in sulfide-rich ore deposits, mafic and ultramafic igneous rocks, hydrothermal systems, and other geological environments containing palladium and antimony. The mineral is generally found […]<\/p>\n","protected":false},"author":1,"featured_media":5086,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Naldrettite Mineral: Formula, Properties & Occurrence","_seopress_titles_desc":"Naldrettite is a rare palladium-antimony mineral with the formula Pd\u2082Sb. It occurs as microscopic grains in PGE ores, hydrothermal systems, and altered chromitites.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-5139","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article"],"_links":{"self":[{"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/posts\/5139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/comments?post=5139"}],"version-history":[{"count":1,"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/posts\/5139\/revisions"}],"predecessor-version":[{"id":5140,"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/posts\/5139\/revisions\/5140"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/media\/5086"}],"wp:attachment":[{"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/media?parent=5139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/categories?post=5139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crystals.rocks\/vi\/wp-json\/wp\/v2\/tags?post=5139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}