Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Durangite & Cassiterite

Views:
Watches:
MGR825531

Durangite & Cassiterite

Rare Mineral

Description Tabs

Description
Locality: 
Thomas Range, Juab County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 1.6 × 1.3 cm
Description

This is an out-standing rarity. The type-locality is Durango in Mexico, Utah is one of only 5 localities world-wide which produced this mineral and from Utah they are even more rare than from Durango. The durangite shows brick-red color and fine contrast to very dark hematite matrix. Should be high valued for rarity!

Mineral Data
What's on the rock

Durangite

Formula: 
NaAl(AsO4)F
Strunz: 
8.BH.10
Hardness: 
5.5
Type Locality: 
Barranca Mine, Coneto de Comonfort, Mun. de Coneto de Comonfort, Durango, Mexico

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal
Hardness: 
6.0 - 7.0