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UM1987-10-S:AgFe

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Formula:
Ag2Fe15S20
author's interpretation: AgFe8S11
Compare lenaite, which is probably found associated.

Intimately associated with argentopyrite, as crystallographically oriented lamellae, from 1 x 10 to 5 x 60 microns in size.


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Unique IdentifiersHide

Mindat ID:
51529
Long-form identifier:
mindat:1:1:51529:8

Similar NamesHide

UM1969-09-S:AgTeAg11Te3S4
UM1969-10-S:AgTeAg5Te2S
UM1970-24-S:CuFe(Fe,Cu)S
UM1970-25-S:CuFeHA synonym of Ferrovalleriite2(Fe,Cu)S · 1.5Fe(OH)2
UM1974-16-Se:CoFe(Co,Fe)S2
UM1976-12-S:AgTeAg4TeS
UM1979-//-S:AgTeA synonym of CervelleiteAg4TeS
UM1981-12-S:CoFe~(Co,Fe)4S3
UM1983-12-S:CuFeCu2FeS3
UM1986-42-S:CuFeCu2Fe3S5
UM1988-17-S:CuFeCu7Fe8S16
UM1988-18-S:CuFeCu5Fe9S14
UM1994-21-S:AgTeAg3TeS
UM1994-22-S:CuFeCuFe3S4
UM1996-29-S:AgTeAg(S,Te)2
UM2002-12-OS:CuFe~(Cu,Fe)SO ?
UM2003-17-S:AgTeAg6TeS2
UM2003-19-S:CuFe(Cu0.96K0.04)(Fe0.6Cu0.4)(S1.98O0.02)

Optical Data of UM1987-10-S:AgFeHide

Anisotropism:
slight
Colour in reflected light:
cream to pinkish-brown
Comments:
reflectance higher than that of argentopyrite, but lower than pyrite's

Chemistry of UM1987-10-S:AgFeHide

Mindat Formula:
Ag2Fe15S20

author's interpretation: AgFe8S11
Element Weights:
Element% weight
Fe49.429 %
S37.841 %
Ag12.730 %

Calculated from ideal end-member formula.
Elements listed:
Ag, Fe, S - search for minerals with similar chemistry

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 UM1987-10-S:AgFeHide

References for UM1987-10-S:AgFeHide

Localities for UM1987-10-S:AgFeHide

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.
UK
 
  • England
    • Cumbria
      • Eden
        • Alston Moor
          • Garrigill
Ixer et al. (1987) +1 other reference
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