A classic, fine quality display specimen of the elusive mercury-bearing Tetrahedrites from the Grosskogel near Brixlegg in the Tyrol of Austria. These pieces were once considered to be their own species, and called Schwatzite (after the fist discovery at Schwatz near Brixlegg, Austria) for many decades. They were well-known around Europe, but are nearly impossible to find on the market today. This specimen features a pair of predominant, sharp, dark grey colored, very well-formed, modified hextetrahedral crystals of Mercurian Tetrahedrite, measuring up to a full 1.2 cm, well-isolated on matrix. The crystals are in excellent condition, and the piece displays beautifully as you can see from the photos. This rare variety would most certainly make a great addition to any sulfide suite or a collection of European minerals. The piece is from the collection of Kay Robertson (#5980) with a couple of old hand-written labels.
ex Kay Robertson collection
Locality: Großkogel (Grosskogel) (Reither Kogel), St Gertraudi, Brixlegg - Schwaz area, Inntal, Nordtirol, Tyrol, Austria
Specimen Size: 9.0 x 5.2 x 3.2 cm (small cabinet)
Largest Crystal: 1.2 cm
Shipping from United States
Processing time
1-3 business days
Estimated shipping times
- North America : 2 - 5 business days
- Europe : 7 - 14 business days
- Australia, New Zealand and Oceania : 10 - 20 business days
- Asia Pacific : 7 - 14 business days
I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.
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Just contact me within: 14 days of delivery
Ship items back to me within: 30 days of delivery
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Privacy policy
Mineral Classics Privacy Policy
Last updated 3 July 2022.
This Privacy Policy describes how and when Mineral Classics (“I”, “me”, “my”) collects, uses, and shares information when you purchase an item from Mineral Classics (https://www.etsy.com/shop/MineralClassics), contact me, or otherwise use my services through Etsy.com or its related sites and services.
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I may change this Privacy Policy from time to time. If I make changes, I will notify you by revising the date at the top of the page.
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You may reach me with any concerns relating to privacy at brian@minclassics.com , or by mail at my physical address PO Box 620982 Littleton, CO 80126 United States addressed to Brian Kosnar Mineral Classics.
For purposes of EU data protection law, I, Angela Kosnar, am the data controller of your personal information. If you have any questions or concerns, you may contact me at angela@minclassics.com.