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Pyrrhotite

Posted by David Von Bargen  
avatar Pyrrhotite
October 20, 2010 06:43PM
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Can you help make this a better article? What good localities have we missed? Can you supply pictures of better specimens than those we show here? Can you give us more and better information about the specimens from these localities? Can you supply better geological or historical information on these localities?


PyrrhotiteFe1-xS Hexagonal and Monoclinic
Santa Eulalia, Mexico 3.7 cm


Forms thin to thick tabular crystals, also bipyramidal to prismatic or barrel like crystals.
Fairly common mineral especially in mafic igneous rocks and volcanogenic sulfide deposits formed from the high temperature "black" smokers

Brazil, Minas Gerais, Iron Quadrangle, Nova Lima

Scale at bottom of image is an inch with a rule at one cm.



Brazil, Minas Gerais, Iron Quadrangle, Nova Lima, Morro Velho mine (incl. Mina Velha; Mina Grande)

8x6x4 cm.
8 cm




Canada, British Columbia, Slocan Mining Division, Riondel, Blue Bell Mine

Scale at bottom of image is an inch with a rule at one cm.
Scale at bottom of image is an inch with a rule at one cm.




Canada, Ontario, Sudbury District, Sudbury

Most pyrrhotite is massive. The Sudbury ores formed from sulfide rich magmas.

14cm



China, Hunan Province, Chenzhou Prefecture, Yizhang Co., Yaogangxian Mine

3 cm



Italy, Tuscany, Grosseto Province, Massa Marittima, Niccioleta Mine

6,5cm



Kosovo, Kosovska Mitrovica, Trepča valley, Trepča complex

Trepca - crystals to 10cm.
5 cm.
Scale at bottom of image is an inch.


Scale at bottom of image is an inch.




Kosovo, Kosovska Mitrovica, Trepča valley, Trepča complex, Stari Trg Mine

7cm
7cm




Mexico, Chihuahua, Mun. de Aquiles Serdán, Santa Eulalia District

El Potosi mine in crystals to 15cm. The deposits are mantos of ore minerals between igneous and sedimentary rocks.

4 cm
8cm


2 cm
6cm


7 cm
4 cm


5 cm
3 cm


Scale at bottom of image is an inch
Scale at bottom of image is an inch.


Scale at bottom of image is an inch




Mexico, Chihuahua, Mun. de Aquiles Serdán, Santa Eulalia District, East Camp, San Antonio Mine (San Antonio el Grande Mine)

10 cm



Mexico, Chihuahua, Mun. de Aquiles Serdán, Santa Eulalia District, West Camp, Aquiles Serdán, Potosí Mine

Scale at bottom of image is an inch.



Mexico, Chihuahua, Mun. de Aquiles Serdán, Santa Eulalia District, West Camp, Francisco Portillo, Potosí Mine (El Potosí Mine)

2 cm
4 cm




Mexico, Zacatecas

3 cm




Romania, Maramures Co., Baia Mare (Nagybánya), Chiuzbaia (Kisbánya), Herja Mine

6cm
4 cm




Russia, Far-Eastern Region, Primorskiy Kray, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche)

4 cm
4 cm


5 cm
3 cm


3 cm
3 cm




Russia, Far-Eastern Region, Primorskiy Kray, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Nikolaevskiy Mine

Nikolaevskoye deposit had crystals up to 40cm in size in the skarn deposit. Coarse-blocky prismatic-pinacoidal, to thick tabular crystals. They may be replaced by pyrite or marcasite.

15 cm
8 cm


6 cm
13 cm




Switzerland, Uri, Urseren, Realp, Furka basis tunnel (east section)

2 cm




UK, England, Co. Durham, North Pennines, Weardale, Westgate, Cambokeels Mine (Cammock Isle Mine; Cumnock Isle Mine; Cammock Eals Mine)

3 cm




Edited 3 time(s). Last edit at 10/20/2010 07:28PM by David Von Bargen.
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