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Tvedalite

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BCK218549

Tvedalite

Type Locality

Description Tabs

Description
Locality: 
Vevja Quarry, Tvedalen, Larvik, Vestfold og Telemark, Norway
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1 × 0.8 cm
Description

You are bidding on a small specimen with beige, radial and extremely rare tvedalite making up the larger portion of spheres with chiavennite coating the outside of them, all on natrolite matrix. I'm not sure what the platy crystals are in the vug but assuming they are also tvedalite?

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

Seller Information

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