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Quartz & Epidote

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MGR661858

Quartz & Epidote

Description Tabs

Description
Locality: 
Green Monster Mine, Prince of Wales Island, Alaska, United States of America
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 2.6 × 1.3 cm
Description

A very uncommon and rare specimen from this prominent locality which is usually prominent for epidote crystals. What we have here is a rare variety of quarz: A perfect shaped "Japanese twin". The quarz crystals are sharp terminated, faces are partly glossy, noce contrast to dark green epidote at the bottom.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Epidote

Formula: 
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05a
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
Colorless
Type Locality: 
Bourg d'Oisans, Isère, Rhône-Alpes, France...