Dragon Minerals - November 24, 2024 Update

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05633: Columbite-Tantalite and Albite variety Cleavelandite - $24
Carmelita Mine, Chihuahua Valley, Warner Springs Mining District, San Diego County, California
Miniature - 4.6 x 3.7 x 3.3 cm
54 grams
Specimen status: Reserved
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A 3.6 mm tabular columbite-tantalite crystal with excellent form sits near the apex of a bladed albite variety cleavelandite matrix. Matrix for the albite is crystalline to massive quartz with minor muscovite. The Mindat mineral list for this locality does not include columbite-tantalite but it does include stibiotantalite. That the crystal in question here is pitch black and not light brown is more consistent with columbite-tantalite than with stibiotantalite (in the absence of analytical data). Displays nicely. Excellent condition.






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