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Roméite & Piemontite

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Roméite & Piemontite

Type Locality

Description Tabs

Description
Locality: 
Praborna Mine, Saint-Marcel, Aosta Valley, Italy
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 2.1 × 2.5 cm
Description

some tiny, orange romeite crystals on dark red piemontite from the type locality

Mineral Data
What's on the rock

Piemontite

Formula: 
{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05
Hardness: 
6.0 - 6.5
Streak: 
Reddish
Type Locality: 
Prabornaz Mine (Praborna Mine), Saint-Marcel, Aosta Valley, Italy