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KOBELLITE - Jedľovec, Fichtenhubel,​ Slovakia​ | 29 x 23 x 11 mm | Box & Label | RARE

Kobellite, Slovakia, Thumbnail (1-3 cm)
US$14.95
a8228
1 item(s)
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Mineral: KOBELLITE
Locality: Jedľovec Mt north slope,(Fichtenhubel), Smolnícka Huta, Gelnica District, Košice Region, Slovakia
Dimension (mm): 29 x 23 x 11 mm

Description / Notes: Kobellite forms steel-gray, metallic luster, opaque, needle-like crystals that intergrow and grow into a brown-green siderite, brass-yellow chalcopyrite, and golden pyrite.

Specimen packed in box of size 38 x 38 x 34 mm with card/label.

  • Formula:Pb22Cu4(Bi,Sb)30S69  May contain minor Fe replacing Cu, and minor Se replacing S.
  • Colour:Blackish lead-gray to steel-gray
  • Lustre:Metallic, Sub-Metallic
  • Hardness:2½ - 3
  • Specific Gravity:6.334
  • Crystal System:Orthorhombic
  • Member of:Kobellite Homologous Series Grou
  • Name:Named in 1839 by J. Setterberg in honor of Wolfgang Xavier Franz Ritter von Kobell [July 19, 1803 München, Germany – November 11, 1882 München, Germany], mineralogist and author/poet who specialized in writing in Bavarian dialect. Von Kobell was professor of mineralogy at University of München beginning in 1826 and in 1855 invented a device (stauroscope) for studying the optical properties of crystals. In 1856, he became the first curator of the Bavarian Museum's mineral collection. Von Kobell also was an early experimenter in photography and photochemical techniques. [Note: The historical and erroneous author attribution has been "Sätterberg".]
  • Type Locality: Vena Mines, Hammar, Askersund, Örebro County, Sweden
  • IMA status: Approved, 'Grandfathered' (first described prior to 1959)

Further information in mineralogy databases:
 
Classification:
  • 2.Sulfides
Mineral name:
  • Kobellite
Country origine:
Slovakia
Specimen size:
Thumbnail (1-3 cm)

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