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Goethite, Marcasite, Calcite
Specimen ID:
G9P-EEE
Mineral(s)
Goethite
:
α-Fe
3+
O(OH)
Marcasite
:
FeS
2
Calcite
:
CaCO
3
Locality
As recorded:
Fayerweather Quarry, Pepin County, Wisconsin, USA
Mindat locality:
Fayerweather Quarry (Stockholm Quarry; Tiffany Construction Div.; Edward Kraemer and Sons; Inc.), Pepin County, Wisconsin, USA
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Photos
Collections
Collected by:
Bill Cordua
Events
Photo added to mindat.org
“
Clusters of twinned pseudomorphs of twinned maracasite replaced by goethite. The marcasite were apparently growing epitactically on pyrite, producing right angle crosses. Matrix is calcite on sparry dolostone.
”
Bill Cordua
- 26th January 2015
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