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| | AlistosMexico |
 | | Its association with niccolite and maucherite is hypogene and it is probably also hypogene in the millerite ore. Millerite is usually supergene (4) but the possibility of hypogene origin has been recognized (2), and pentlandite may be supergene at times although no entirely satisfactory evidence has been presented for this belief (5). |
 | | The ore consists of the nickel minerals polydymite, pentlandite, millerite, niccolite, bravoite, and violarite associated with cobaltite, pyrite, pyrrhotite, chalco pyrite, sphalerite, arsenopyrite, and quartz. |
 | | The association and occurrence of native gold in niccolite and in hypogene millerite, the presence of hypogene millerite, and the graphic intergrowth of gold and gersdorffite are believed to differ from any other described occurrences. |
| www.minsocam.org /msa/collectors_corner/arc/alistosmex.htm (4838 words) |
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