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Keystoneite Choloalite & Hessite

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BCK720308

Keystoneite Choloalite & Hessite

Type Locality

Description Tabs

Description
Locality: 
McAlpine Mine, Peñon Blanco Peak, Tuolomne County, California, United States of America
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 1.8 × 1 cm
Description

You are bidding on a small sample with some rare, yellow crystalline keystoneite lining fractures in and coating grains of hessite with minor green choloalite from the type locality. Rare!

Mineral Data
What's on the rock

Keystoneite

Formula: 
(Ni,Mg,Fe,Mn)3Te3O9·5H2O
Strunz: 
4.JM.05
Hardness: 
0.0
Type Locality: 
Keystone Mine, Magnolia District, Boulder Co., Colorado, USA

Choloalite

Formula: 
(Cu,Sb)3(Pb,Ca)3(TeO3)6Cl
Strunz: 
4.JK.45
Hardness: 
3.0
Type Locality: 
Bambollita Mine (Oriental Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico

Hessite

Formula: 
Ag2Te
Strunz: 
2.BA.60
Hardness: 
2.0 - 3.0
Streak: 
black
Type Locality: 
Koz'modem'yanskii shaft, Second Zavodinskii Mine (Second Sawodinsk Mine), Zyryanovsk Rayon, Altai Mts (Rudnyi Altai), Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast'), Kazakhstan...

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