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AMM1084736

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Description

Locality:

Tsumeb Mine, Otavi Highlands, Namibia

Class:

Crystal Group/Cluster

Size Range:

Thumbnail (1-3cm)

Size:

1.7 × 1.5 × 1.4 cm

Largest Crystal:

1.50cm

Description

Fine specimen of the interesting pseudomorphosis from tennantite after azurite crystals. With other words, the azurite crystals are completely transformed into tennantite by showing the azurite shape. The pseudomorphosis crystals reach to a length of 1.5 centimetre.

It should be emphasized that the original inscription is the handwriting of BARTELKE himself.

Ex. Wolfgang BARTELKE collection from the year 1978.

Important note: The specimens are from the renowned collection of Dr. Gerhard JUNG (Hagendorf specialist, after whom the mineral Jungite was named). Dr. Jung was very meticulous regarding the provenance of his pieces. The previous owner is often noted - it is noticeable that Dr. Jung apparently had good contacts with the famous Tsumeb collectors Walter Richard KAHN (Warikahnite) and Wolfgang BARTELKE (Bartelkeite) from the early 1970s to the late 1980s. Many of the pieces originally came from the hands of the aforementioned pioneers. The specimens of the JUNG collection with first-class and documented provenience are presented here.

Mineral Data

What's on the rock

Tennantite

Formula:

Cu₆[Cu₄(Fe,Zn)₂]As₄S₁₃

Strunz:

2.GB.05

Crystal System:

Isometric

Hardness:

3.0 - 4.5

Type Locality:

Cornwall, England, UK

Azurite

Formula:

Cu₃(CO₃)₂(OH)₂

Strunz:

5.BA.05

Crystal System:

Monoclinic

Hardness:

3.5 - 4.0

Type Locality:

Chessy copper mines, Chessy-les-Mines, Le Bois d'Oingt, Rhône, Rhône-Alpes, France...

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$10

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Shipping Information

Postage Area	Price
Germany (insured parcel) < 3 kg: 6 $	$6
Germany (insured parcel) > 3 kg - 10 kg: 9.50 $	$9.50
Worldwide, tracked < 1 kg: 9.50 $	$9.50
Worldwide, tracked > 1 kg up to 2 kg: 28 $	$28
European Union, tracked > 1 kg up to 2 kg: 18 $	$18

Seller Information

Dr. A. Matthies Minerals

Payment options: offline, paypal_wpp, paypal_wps

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Accepted payment methods: PayPal, bank transfer.

Money back guarantee is valid until 14 days after receiving the payment. The refund will be initiated immediately upon receiving the minerals back. Due to the return time, there may be a delay in the refund.