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Tapiaite & Joteite

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CR803836

Tapiaite & Joteite

Type Locality
New Mineral type

Description Tabs

Description
Locality: 
Jote Mine, Pampa Larga, Tierra Amarilla, Copiapó Province, Atacama Region, Chile
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.2 × 2.5 cm
Description

Tapiaite (IMA2014-024), Ca5Al2(AsO4)4(OH)4·12H2O, is a new mineral from the Jote mine, Tierra Amarilla, Copiapó Province, Atacama, Chile.
It was first discribed by A.R. Kampf et al. and published in August 2014 in the Mineralogical Magazine, 78, 797-804

Crystals occur as blades up to about 0.5 x 0.05 x 0.01 mm in size, but are usually much smaller. The blades are commonly intergrown in sub-parallel bundles and are transparent and have vitreous lustre.

This is a very rich and good specimen of these brand new mineral showing hundreds of tiny colorless tapiaite crystals together with pale blue joteite blades.
Beautiful under the microscope !

Mineral Data
What's on the rock

Tapiaite

Formula: 
Ca5Al2(AsO4)4(OH)4·12H2O
Hardness: 
0.0
Type Locality: 
Jote Mine, Pampa Larga district, Tierra Amarilla, Copiapó Province, Atacama Region, Chile

Joteite

Formula: 
Ca2CuAl[AsO4][AsO3(OH)]2(OH)2(H2O)5
Hardness: 
0.0
Type Locality: 
Jote Mine, Pampa Larga district, Tierra Amarilla, Copiapó Province, Atacama Region, Chile