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Melanophlogite Magnesite & Volkonskoite

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TBM1166872

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Description
Locality: 
Fortullino, Rosignano Marittimo, Livorno Province, Tuscany, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
4.5 × 7.5 × 4 cm
Largest Crystal: 
0.30cm
Weight: 
100.00gr
Description

Very nice transparent Melanophlogite spheres and cubic crystals up to 3 mm  with cluster of Magnesite crystals up to 3 mm and masses of light green Volkonskoite in the matrix. Cubic melanophlogite crystals are very rare and highly sought aftee by collectors

Mineral Data
What's on the rock

Melanophlogite

Formula: 
46SiO2·6(N2,CO2)·2(CH4,N2)
Strunz: 
4.DA.25
Crystal System: 
Tetragonal
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Giona Mine, Milena, Caltanissetta Province, Sicily, Italy

Magnesite

Formula: 
MgCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White
Type Locality: 
Magnisía Prefecture (Magnesia), Thessalia Department (Thessaly), Greece

Volkonskoite

Formula: 
Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2·4H2O
Strunz: 
9.EC.40
Hardness: 
1.0 - 2.0
Type Locality: 
Efimyatskaya Mt, Efimyata Village, Kama River, Okhansk, Permskaya Oblast', Middle Urals, Urals Region, Russia...

Current price

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Start 16 Feb 18:00
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Shipping Information

Postage Area Price
ITALY
9.50
EUROPE ( AREA 1)
13.50
EUROPE ( AREA 1A)
19
USA
41
AMERICAN - UK - ASIA - AFRICA - OCEANIA ( AREA 2):
19
OCEANIA ( AREA 3):
21

Bid History

Full bid history