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Hollandite & Pyrolusite

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Hollandite & Pyrolusite

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Description
Locality: 
Esperanza Mine, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 4.1 × 2.7 cm
Largest Crystal: 
0.05cm
Weight: 
39.00gr
Description

A small miniature specimen of hollandite in association with pyrolusite on a limonitic matrix measuring 4.1x2.7x3.3cm at the widest points.  Dotted around the specimen are several fairly deep pockets that are lined with tiny black bladed crystals of pyrolusite.  Sitting on top of some of the pyrolusite are thick black needles of hollandite.  Both the hollandite and pyrolusite show a weakly metallic lustre.  Minor calcite is also associated

Mineral Data
What's on the rock

Hollandite

Formula: 
Ba(Mn4+6Mn3+2)O16
Strunz: 
4.DK.05a
Hardness: 
4.0 - 6.0
Streak: 
Black
Type Locality: 
Gowari Wadhona Mine, Chhindwara District (Chindawara District; Chindwara District), Jabalpur Division, Madhya Pradesh, India

Pyrolusite

Formula: 
MnO2
Strunz: 
4.DB.05
Hardness: 
2.0 - 6.5
A&N Minerals

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Shipping costs will be lower when 2 or more specimens are purchased together.

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Please refer to Seller's Shipping Policy below for further details

 

Returns:  If, for whatever reason, the Buyer is not happy with the specimen due either to it being not as described or photographed on the appropriate specimen page, or the specimen being damaged or broken in transit, the Seller will be happy to have the specimen returned at the Buyer's expense.  Notification that the specimen is being returned must be received by the Seller within 10 days of receipt otherwise Seller will assume that the Buyer is happy with the purchase and will no longer accept returns.  The specimen should be returned as soon as possible after the Seller has been informed that the specimen is being returned.  For specimens returned because the Buyer is not happy with their purchase, the Seller must receive the specimen back in exactly the same condition as it was sent from the Seller.  In the unfortunate event that a specimen is broken in the post, Buyer must ensure that as many fragments of the specimen, however small, are returned to the Seller so that compensation can be sought from the relevant postal service.  Refunds will be given for the specimen on receipt of the specimen in its original state.  Refunds will be paid by Paypal.

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