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Bertrandite

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LGM530285

Bertrandite

Ex Dr. Krantz, Bonn, Germany
With Antique Label

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Description Tabs

Description
Locality: 
Písek District, South Bohemian Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 3.7 × 2.2 cm
Weight: 
34.00gr
Description

Crystalline bertrandite in blueish color embedded in quartz/feldspar matrix.

Historic specimen, comes with beautiful old Krantz label dated before 1902. Background: In June 1901, due to passing of some resolutions in the context of a reform of german orthography, the spelling of german "Contor" (branch office) was altered to "Kontor".

Mineral Data
What's on the rock

Bertrandite

Formula: 
Be4(Si2O7)(OH)2
Strunz: 
9.BD.05
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 7.0
Type Locality: 
Petit-Port, Nantes, Loire-Atlantique, Pays de Loire, France

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Thank you for viewing my auctions! Maintaining high standards in customer service is extremely important to me. If shipping takes longer than expected, please contact me. It is possible to file an investigation request, and during nearly ten years of e-rocks NO parcel was finally lost.

If for any reason you are not happy with any aspect of your transaction, please let me know as soon as possible, ideally within 1 week of receiving your specimen.

I will happily do all in my power to resolve the situation to your satisfaction.

+++IMPORTANT+++
Paypal is NOT accepted within Germany! I will charge a supplement of 2.5% for paypal payments within Germany. Bank transfer / offline payment is without costs and usually also completed within one day.
Within EU countries, bank transfer is also possible but not mandatory. I will offer free shipping or a discount in some cases. Please ask after receiving your invoice.

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