Andoryt

Andoryt
Ilustracja
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Właściwości chemiczne i fizyczne
Skład chemiczny

PbAgSb3S6

Twardość w skali Mohsa

2,5-3,5

Przełam

muszlowy

Układ krystalograficzny

rombowy

Gęstość minerału

5,4 g/cm³

Właściwości optyczne
Barwa

ciemnoszary, czarny

Rysa

czarna

Andoryt – minerał klasy siarczków.

Występowanie

Bibliografia

  • Olaf Medenbach, Cornelia Sussieck–Fornefeld: Minerały. Warszawa: Świat Książki, 1996. ISBN 83-7129-194-9.

Linki zewnętrzne

Media użyte na tej stronie

Andorite-157651.jpg
(c) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Andorite VI
Locality: San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia (Locality at mindat.org)
Size: 4.8 x 3.5 x 0.7 cm.
From the new find in November 2004. Andorite is lead, silver, antimony sulfosalt and was named for the Hungarian mineral collector Andor von Semsey (1833-1923), who holds a remarkable distinction for having two mineral species named after him (andorite and semseyite). This mine at Oruro dates Spanish mining as far back as the year 1595 and was mined by Incan Indians for several centuries prior. In all the years of mining, these are undoubtedly, the worlds finest Andorites extant! These specimens were extracted from the same vein system worked by the father of Bolivian mineralogy, Federico Ahlfeld. Ahlfeld worked the San Jose mine and Itos mine (the other significant andorite locality at the same mountain in Oruro) when the mines were used predominantly as a major sources of tin to the United States during WWII. The best examples of the species have come from Bolivia. This specimen consists of layered, steel-grey, lustrous crystals of the rare lead, silver, antimony sulfosalt Andorite. The piece is contacted on the base where it detached from the host rock, and is in amazing shape overall for this find. It is very difficult to find any samples of this mineral on the market today, and until very recently, the locality had not produced specimens in MANY years. Ex. Brian Kosnar.