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Gumucionite

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Formula:
ZnS
Name:
Julio F. Gumucio was chief engineer at Llallagua, working for "tin baron" Simon Patino. In his old age he managed the railroad yard at the nearby smelter town of Machacamarca. His mineral collection was the finest ever assembled by a native Bolivian. The collection went to the Banco Minero after his death, then into storage for several years after the death of the bank. The remnants are now on display to the public in the Casa de la Moneda, in the City of Potosi.
A variety of sphalerite from Bolivia which is raspberry red in colour and contains 0.64% As. The colour is thought to be caused by admixed realgar throughout. Similar material from Chile contained 1.7% As uniformly distributed.


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Unique IdentifiersHide

Mindat ID:
1775
Long-form identifier:
mindat:1:1:1775:2

Chemistry of GumucioniteHide

Mindat Formula:
ZnS
Element Weights:
Element% weight
Zn67.094 %
S32.906 %

Calculated from ideal end-member formula.

Other Language Names for GumucioniteHide

German:Gumucionit
Spanish:Gumucionita

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for GumucioniteHide

References for GumucioniteHide

Localities for GumucioniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Bolivia
 
  • Potosí
    • Rafael Bustillo Province
      • Llallagua
Wilson (2001)
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