Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Uraninite & Boltwoodite & Biotite

Views:
Watches:
SMM755259

Uraninite & Boltwoodite & Biotite

Description Tabs

Description
Locality: 
I Mondei, Montescheno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.5 × 0.4 cm
Description

A shiny group of sheets of biotite crystals hosts a beautiful black crystal of uraninite, unusually well-formed, around, flatteneds between the sheets of transparent mica, rosettes of pale-yellow boltwoodite crystals can be seen. Very cute and really unusual and intriguing. Rare.

Boxed with Label
Mineral Data
What's on the rock

Uraninite

Formula: 
UO2
Strunz: 
4.DL.05
Crystal System: 
Isometric
Hardness: 
5.0 - 6.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Boltwoodite

Formula: 
(K,Na)(UO2)[HSiO4]·0.5H2O
Strunz: 
9.AK.15
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Pick's Delta Mine (Delta Mine; Pick's Mine), Delta, San Rafael District (San Rafael Swell), Emery Co., Utah, USA...

Biotite

Group Parent: 
Mica Group

Seller Information

Payment options: offline, paypal_wpp, paypal_wps