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Rhodonite & Tephroite

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RPL738116

Rhodonite & Tephroite

Classic Locality

Description Tabs

Description
Locality: 
Treburland Mine, Altarnun, Cornwall, United Kingdom
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5.5 × 1.5 cm
Largest Crystal: 
0.00cm
Weight: 
121.00gr
Description

A cut slice of crystalline dark pink masses of rhodonite with minor brown groups and veinlets of  tephroite. One side has been polished, the edge shows alteration to pyrolusite.

 

Mineral Data
What's on the rock

Tephroite

Formula: 
Mn2+2SiO4
Strunz: 
9.AC.05
Crystal System: 
Orthorhombic Forms short prismatic crystals.
Hardness: 
6.0
Streak: 
Pale gray
Type Locality: 
Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

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

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