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Franzinite & Vesuvianite

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SER1135892

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Description
Locality: 
Case Collina, Pitigliano, Grosseto Province, Tuscany, Italy
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 4.5 × 3.1 cm
Description

white crystalline masses of franzinite with and on vesuvianite brown crystals

Mineral Data
What's on the rock

Franzinite

Formula: 
(Na,K)6Ca2(Al6Si6O24)(SO4)2·0.5H2O
Strunz: 
9.FB.05
Hardness: 
5.0
Streak: 
White
Type Locality: 
Case Collina (Toscopomici quarry), Pitigliano, Grosseto Province, Tuscany, Italy

Vesuvianite

Formula: 
(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Strunz: 
9.BG.35
Hardness: 
6.5
Streak: 
White
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

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Start 30 Dec 18:00
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