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Sanbornite Macdonaldite & Kampfite

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UVM592083

Sanbornite Macdonaldite & Kampfite

Type Locality

Description Tabs

Description
Locality: 
Big Creek, Fresno County, California, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 3.5 × 1.5 cm
Description

An excellent miniature size cleaved mass of sanbornite with greyish inclusions of kampfite, and colorless acicular crystals of macdonaldite visible under magnification along the edge of the specimen.   This is the type locality for macdonaldite.

Mineral Data
What's on the rock

Sanbornite

Formula: 
Ba2(Si4O10)
Strunz: 
9.EF.10
Hardness: 
5.0
Type Locality: 
Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House District, East Belt, Mariposa Co., California, USA

Macdonaldite

Formula: 
BaCa4Si16O36(OH)2·10H2O
Strunz: 
9.EB.05
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.0
Type Locality: 
Big Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA

Kampfite

Formula: 
Ba12(Si11Al5)O31(CO3)8Cl5
Strunz: 
9.EG.20
Hardness: 
3.0
Streak: 
White
Type Locality: 
Esquire No. 1 claim, Rush Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA

Seller Information

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