Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Tvedalite & Chiavennite

Views:
Watches:
JYJ798423

Tvedalite & Chiavennite

Rare Mineral

Description Tabs

Description
Locality: 
Vevja Quarry, Tvedalen, Larvik, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 2.7 × 1.8 cm
Description

Pale zonated tvedalite (beige) and chiavennite (orange) on matrix. 

Rare mineral!

Mineral Data
What's on the rock

Tvedalite

Formula: 
(Ca,Mn)4Be3Si6O17(OH)4·3H2O
Strunz: 
9.DF.20
Crystal System: 
Orthorhombic
Hardness: 
4.5
Streak: 
white
Type Locality: 
Vevja Quarry, Tvedalen, Larvik, Vestfold, Norway

Chiavennite

Formula: 
CaMnBe2Si5O13(OH)2·2H2O
Strunz: 
9.GF.25
Hardness: 
3.0
Type Locality: 
Tanno, Chiavenna, Valchiavenna, Sondrio Province, Lombardy, Italy