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Calcite

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MNT601308

Calcite

ex Rolf Heeren, GER
Classic Locality

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Description
Locality: 
Calais, Pas-de-Calais, Hauts-de-France, France
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.3 × 6.5 × 3.6 cm
Description

This is a very interesting and rare specimen for calcite collectors: A shell of a not formally identified echinoderm (but definitely a sea urchin) hosts parallel grown clear colourless / greyish calcite crystals aligned on the biologically given structure of the fossil. Really hard to photograph, the specimen is more sculptural in nature than the pictures suggest. Recorded locality is Calais, Normandy, France. Specimen comes out of the Rolf Heeren collection, i think it is probably second half of 20th century. Label of R. Heeren will be included.

Mineral Data
What's on the rock

Calcite

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

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

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