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Thortveitite Synchysite & Polycrase

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SER575871

Thortveitite Synchysite & Polycrase

Description Tabs

Description
Locality: 
Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.1 × 2.1 cm
Description

A rare combination between white tufts of thortveitite, yellow prismatic polycrase and white exagonal synchysite; self collected on 2009

Mineral Data
What's on the rock

Thortveitite

Formula: 
(Sc,Y)2Si2O7
Strunz: 
9.BC.05
Crystal System: 
Monoclinic
Hardness: 
6.0 - 7.0
Streak: 
white
Type Locality: 
Ljoslandsknipan (Thortveitittgruva), Knipan (Knipane), Ljosland, Iveland, Aust-Agder, Norway

Synchysite

Synonym Of: 

Synchysite-(Ce)

Formula: 
Ca(Ce,La)(CO3)2F
Strunz: 
5.BD.20c
Hardness: 
4.5

Synchysite-(Nd)

Formula: 
Ca(Nd,Y,Gd)(CO3)2F
Strunz: 
5.BD.20c
Hardness: 
4.5

Synchysite-(Y)

Formula: 
Ca(Y,Ce)(CO3)2F
Strunz: 
5.BD.20c
Hardness: 
6.0 - 6.5
Group Parent: 
Synchysite Group