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Calcite & Pyrolusite

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MNT51556

Calcite & Pyrolusite

Ex Dr F Krantz (Bonn Germany)
Classic Locality

Description Tabs

Description
Locality: 
Bülten-Adenstedt Mine, Ilsede, Peine District, Lower Saxony, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
11.5 × 7.3 × 3.5 cm
Description

An interesting german classic from Gross-Bulten, from the early days of the open pit iron ore works end of the 19th century. A limonite geode is covered with some manganese oxide (labeled pyrolusite) and numerous calcite crystals. A rare specimen from a classic and long time gone locality. Ex Dr. F. Krantz stock.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Pyrolusite

Formula: 
MnO2
Strunz: 
4.DB.05
Hardness: 
2.0 - 6.5

Seller Information

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Seller's terms and conditions

Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger