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Kristiansenite Quartz Albite & Tourmaline

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SER616890

Kristiansenite Quartz Albite & Tourmaline

Description Tabs

Description
Locality: 
Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5.9 × 3.1 cm
Description

Here a new find in Seula quarry : a fantastic spray of light yellow, prismatic crystals of kristiansenite on quartz with albite and muscovite ; albite  shows an intense blue colour because of tourmaline crystals inside; self collected on Agoust 2017

Mineral Data
What's on the rock

Kristiansenite

Formula: 
Ca2ScSn(Si2O7)(Si2O6OH)
Strunz: 
9.BC.30
Hardness: 
5.5 - 6.0
Streak: 
white
Type Locality: 
Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7