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Edenite Piemontite & Rhodonite

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MEX561102

Edenite Piemontite & Rhodonite

Description Tabs

Description
Locality: 
Praborna Mine, Saint-Marcel, Aosta Valley, Italy
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.6 × 6.2 × 5.2 cm
Weight: 
281.00gr
Description

Out and out specimen of edenite, rhodonite and piemontite. The best mineral here is the white needles of edenite, than the dark red piemontite and the last one the brownish rhodonite. A very well example for this mineral.

Mineral Data
What's on the rock

Edenite

Formula: 
{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Strunz: 
9.DE.15
Crystal System: 
Monoclinic
Hardness: 
5.0 - 6.0
Streak: 
White
Type Locality: 
Edenville, Town of Warwick, Orange Co., New York, USA

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

Rhodonite

Formula: 
MnSiO3
Strunz: 
9.DK.05
Crystal System: 
Triclinic
Hardness: 
5.5 - 6.5
Streak: 
White
Type Locality: 
Kaiser Franz Mine (König Wilhelm Mine), Schävenholz (Schebenholz; Schäbenholz), Elbingerode, Harz, Saxony-Anhalt, Germany