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Johannsenite & Jarosite

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CLB159407

Johannsenite & Jarosite

Type Locality

Description Tabs

Description
Locality: 
Temperino Mine, Campiglia Marittima, Livorno Province, Tuscany, Italy
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3 × 2.6 cm
Description

Graish-brown, massive, radiating johannsenite from the type locality. With yellow jarosite (visual ID). Rare.

Mineral Data
What's on the rock

Johannsenite

Formula: 
CaMn2+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.15
Hardness: 
6.0
Streak: 
white
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Jarosite

Formula: 
KFe3+ 3(SO4)2(OH)6
Strunz: 
7.BC.10
Crystal System: 
Trigonal - Pyramidal Class
Hardness: 
2.5 - 3.5
Type Locality: 
Jaroso Ravine, Sierra Almagrera, Cuevas del Almanzora (Cuevas de Vera), Almería, Andalusia, Spain

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