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Gillespite & Sanbornite

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PDM648660

Gillespite & Sanbornite

Description Tabs

Description
Locality: 
Madrelena Mine, Tres Pozos, Baja California, Mexico
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.3 × 2.1 cm
Description

A good sample of laminar strawberry red gillespite, a rare Ba-Fe-Silicate on both sides of a pearly white sanbornite matrix.

Acquired in 2012, it is an Ex. A.Gelders #721

Mineral Data
What's on the rock

Gillespite

Formula: 
BaFe2+[Si4O10]
Strunz: 
9.EA.05
Hardness: 
4.0
Type Locality: 
Dry Delta, Alaska Range, Yukon-Koyukuk Borough, Alaska, USA

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

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