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Pyrolusite

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ADR783236

Pyrolusite

Description Tabs

Description
Locality: 
Serra da Mina Mine, Cercal, Santiago do Cacém, Setúbal District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 4.6 × 6.7 cm
Largest Crystal: 
2.00cm
Weight: 
107.00gr
Description

Spectacular piece of Pyrolusite on matrix of the Portuguese mine "Serra do Cercal", this iron and manganese mine was in production from 1997 until the year 2000 that was inactive. The strip is located in the Cercal area ferro-manganífera Cercal-Odemira, where there are many mines that exploit the vein. It is more in Santiago do Cacém, municipality of Setúbal there are records of gold mines, it is an area rich in minerals, such as the sample, a piece of radiated acicular crystals of pyrolusite on goethite matrix (can be found as earthy dust or aggregates fibrous, such as scabs on rocks, sometimes with a brotroidal shape and even as drusts of microcrystals), an oxide of metallic, opaque and fragile shine, of a tetragonal crystalline system, dark gray color of great visual beauty, a great piece to show it in our mineral collection

Mineral Data
What's on the rock

Pyrolusite

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

Seller Information

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Seller's terms and conditions

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- Pieces will be sent 48/72 hours after the payment is received.

- All of our shipments, will be done by secured mail & Track Number.

- Shipping fees does not include insurances, import duties, taxes or charges. Check with your country´s custom border. In case you want to ensure you order contact with us.

- Every mineral will be nicely packed and labelled.

- Multiple purchases will have discount on shippings if it is possible due to the weight of the pieces.

- Colour may vary due to the camera sensor.