mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Sacrofanite

#38696

Sacrofanite

#38696
Availability
Sold
Size
3.5 x 3 x 2 cm - Miniature 
Formula
(Na,Ca)9(Si,Al)12O24(OH,SO4,CO3,Cl)4·nH2O (RRUFF)
Locality
Sacrofano, Roma, Lazio, Italy

Superb transparent colorless, hexagonal crystals to 2.5mm in a 1cm vug. It occurs in stacked hexagonal plates. Sacrofanite is a rare tectosilicate found in volcanic rock in only two worldwide localities. These are by all accounts excellent crystals.

Type Locality

Sacrofanite

Formula
(Na,Ca)9(Si,Al)12O24(OH,SO4,CO3,Cl)4·nH2
Crystal System
Hexagonal 
Crystal Habit
Hexagonal, Prismatic 
Cleavage
Perfect, Perfect, None 
Luster
Vitreous (Glassy) 
Color
colorless 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Hardness
5.5-6 

Data courtesy of Webmineral.

Special Info
Type Locality

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2020 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map