Dragon Minerals - January 13, 2025 Update

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37532: Cornubite-Cornwallite with Agardite-Mixite - $8
Majuba Hill Mine, Antelope Mining District, Pershing County, Nevada
Miniature - 5.3 x 3.8 x 2.2 cm
41 grams
Specimen status: Reserved
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Deep green, crusty cornubite-cornwallite with lesser, acicular agardite-mixite. Cornubite and cornwallite are isomeric copper arsenates - Cu5(AsO4)2(OH)2·3H2O which cannot be distinguished visually. Similarly, the copper arsenates agardite - (REE)Cu6(AsO4)3(OH)6·3H2O and the bismuth analog mixite - BiCu6(AsO4)3(OH)6·3H2O cannot be distinguished visually.




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