Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Quartz Asphaltum & Siderite

Views:
Watches:
PDM618029

Quartz Asphaltum & Siderite

Description Tabs

Description
Locality: 
Uffeln Quarry, Ibbenbüren, Münsterland, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.2 × 5.2 × 3.4 cm
Largest Crystal: 
2.80cm
Description

Doubly-ended quartz crystals up to 28 mm, on brown siderite matrix, with a good lustrous black asphalt sphere of 16 mm in diameter, classic for the locality.

Found by Gerrie Golstein (NL) in 1971.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Siderite

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

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Item Toolbox