Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Goethite Var Iron Ochre With Halloysite

Views:
Watches:
LGM889290

Goethite Var Iron Ochre With Halloysite

Ex Dr. Krantz, Bonn, Germany
With Antique Label

Share this by email

Description Tabs

Description
Locality: 
Mount Baldo, Trento Province, Trentino-Alto Adige, Italy
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4.5 × 2.5 cm
Weight: 
81.00gr
Description

A piece of earthy iron ochre from Monte Baldo near the Garda lake, Trentino-Alto Adige, Italy.

Comes with nice old pen and ink label. As early as 1872 Bernard Stürtz (1845-1928) had established himself as a mineral dealer in Bonn am Rhein, in a dealership that had been founded by his wife in 1866.
Stürtz was proprietor of what he called his Mineralogisches und palaeontologisches Comptoir ("Mineralogical and paleontological office"), dealing in "minerals, meteorites, rocks, ores, fossils, models, scientific instruments and preparations". His stock was bought out by Dr. A. Krantz very likely in the 1920's.

The label means: "Gelberde, Monte Baldo".
Gelberde = goethite ± halloysite-10Å, Dana 6th, 695 (1892).

Mineral Data
What's on the rock

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Halloysite

Group Parent: 
Kaolinite-Serpentine Group

Iron Ochre

Mixture Of: 

Clay

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Hardness: 
5.0 - 5.5

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Hardness: 
5.0 - 6.0

Limonite

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.

Item Toolbox