Pseudostantienite

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Pseudostantienite, natural form scree; Size: 56mm; Collection: Natural History Museum Mauritianum Altenburg.
Pseudostantienite, natural form drops; Size: 12mm (largest piece on top); Collection: Natural History Museum Mauritianum Altenburg.

Pseudostantienite is a type of amber that was found in the Goitsche opencast mine near Bitterfeld . The name introduced with the description in 1986 indicates the great similarity with the amber species Stantienite . The pseudostantienite is only known from the Bitterfeld site, more than 70 pieces have been recovered.

Pseudostantienite belongs to the group of black resins. In contrast to the similar stantienite, its shape is flat. Breaks are rare, large-scalloped, welted and deep black with a matt sheen. Grinded surfaces are rough and black with a slightly reddish silk sheen, caused by the layered fine structure. It is not brittle, but tough and very difficult to polish. The powder is cinnamon in color.

Other authors doubted the independence of the pseudostantienit without justification, but ultimately recognized it.

The origin of the pseudostantienite is not yet known. As with Stantienit, a relationship with Canarium rostratum from the balsam tree family (Burseraceae) appears, according to Alexander Tschirch, the presumed parent plant of the "Black (Sumatra) Dammar".

Individual evidence

  1. ^ Roland Fuhrmann, Rolf Borsdorf: The amber types of the Lower Miocene of Bitterfeld. In: Journal for Applied Geology , Volume 32, Berlin 1986, pages 309-316, PDF .
  2. ^ Roland Fuhrmann: The bitter fields amber. In: Mauritiana , Volume 21, Altenburg 2010, ISSN  0233-173X , pages 13-58, PDF .
  3. ↑ Barbara Kosmowska-Ceranowicz, Günter Krumbiegel : Geology and history of Bitterfeld amber and other fossil resins . In: Hallesches Jahrbuch für Geoswissenschaften , Volume 14, Gotha 1989, pages 1-25.
  4. ↑ Günter Krumbiegel, Barbara Kosmowska-Ceranowicz: Bitterfeld amber types and variants compared to other deposits (status of the investigations 2004) . In: Excursion guide and publications of the German Society for Geosciences , Issue 224, Berlin 2004, pages 47–59.
  5. ↑ Günter Krumbiegel, Barbara Kosmowska-Ceranowicz: The types of bitter fields amber . In: Bitterfelder Heimatblätter , special issue 2007, Bitterfeld 2007, ISSN  0232-8585 , pages 43-64
  6. ↑ Alexander Tschirch: The resins. The botanical and chemical basics of our knowledge of the formation, development and composition of plant excreta . Volume II, 1st half: XII, Berlin 1935, 471 pages

Web links

Commons : Pseudostantienite from Bitterfeld  - Collection of images, videos and audio files