Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Fluorite Sphalerite & Siderite

Views:
Watches:
MEX668210

Fluorite Sphalerite & Siderite

Fluorescent

Description Tabs

Description
Locality: 
Weardale, County Durham, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
15.5 × 8.6 × 8.5 cm
Largest Crystal: 
1.80cm
Weight: 
1 336.00gr
Description

Large specimen from older collection. The transparent fluorite cubes shows under the sun a weak daylight fluorescence. Last but one picture shows this specimen under a mix of uv light and lamplight. (It was to late for a picture under the morning sun.) The last pictures shows this specimen under longwave lamp with an intensive, bright blue fluorescence.

Mineral Data
What's on the rock

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White