Native Sulphur, Galena, Sphalerite, Fassinaite

Unnamed Cu-Pb-Zn prospect, Negaunee Township, Marquette County, Michigan, USA

A transparent pale yellow crystal of native sulphur (Raman spectroscopy confirmed) on galena with reddish orange sphalerite. Tiny colorless and lustrous chisel-shaped crystals of fassinaite are also in association (single crystal XRD). Collected by Travis Olds and Dan Fountain summer 2010. Canon T3i 149 mm tube- Raynox DCR 250- Thorlabs ...

© Travis Olds

Galena, Cerussite

Unnamed Cu-Pb-Zn prospect, Negaunee Township, Marquette County, Michigan, USA

The largest section of a vein of galena extracted at the Cu, Pb, Zn prospect. The vein is 7-cm long. Associated minerals are pyrite, powdery coatings of cerussite and small native sulfur crystals (see other photos). Travis Olds and Dan Fountain summer 2010.

© Travis Olds

Fassinaite, Native Sulphur, Sphalerite, Galena

Unnamed Cu-Pb-Zn prospect, Negaunee Township, Marquette County, Michigan, USA

Euhedral colorless chisel-shaped fassinaite crystals that are only visible as sharp lustrous faces. Subhedral transparent pale yellow sulphur and orange sphalerite are also in association and the whole assemblage sits atop galena. Fassinaite is one of only five accepted thiosulfate-bearing minerals, and if the Mindat database is current, this may ...

© Travis Olds

Snow Dusted Cut

County Road 480 roadcut, Negaunee Township, Marquette County, Michigan, USA

Here is a photograph of the County Road 480 roadcut near Negaunee, Michigan. Some quartz veins zigzag across the cut, and contain tiny arsenopyrite crystals. This is one of only a few arsenopyrite occurrences in the state of Michigan, and is certainly the most collectible. Photo taken in the late evening of Dec. 20 2015 during a very mild winter.

Native Sulphur, Galena, Sphalerite, Fassinaite

Unnamed Cu-Pb-Zn prospect, Negaunee Township, Marquette County, Michigan, USA

A transparent pale yellow crystal of native sulphur (Raman spectroscopy confirmed) on galena with reddish orange sphalerite. Tiny colorless and lustrous chisel-shaped crystals of fassinaite are also in association (single crystal XRD). Collected by Travis Olds and Dan Fountain summer 2010. Canon T3i 149 mm tube- Raynox DCR 250- Thorlabs ...

© Travis Olds

Galena, Cerussite

Unnamed Cu-Pb-Zn prospect, Negaunee Township, Marquette County, Michigan, USA

The largest section of a vein of galena extracted at the Cu, Pb, Zn prospect. The vein is 7-cm long. Associated minerals are pyrite, powdery coatings of cerussite and small native sulfur crystals (see other photos). Travis Olds and Dan Fountain summer 2010.

© Travis Olds

Fassinaite, Native Sulphur, Sphalerite, Galena

Unnamed Cu-Pb-Zn prospect, Negaunee Township, Marquette County, Michigan, USA

Euhedral colorless chisel-shaped fassinaite crystals that are only visible as sharp lustrous faces. Subhedral transparent pale yellow sulphur and orange sphalerite are also in association and the whole assemblage sits atop galena. Fassinaite is one of only five accepted thiosulfate-bearing minerals, and if the Mindat database is current, this may ...

© Travis Olds

Snow Dusted Cut

County Road 480 roadcut, Negaunee Township, Marquette County, Michigan, USA

Here is a photograph of the County Road 480 roadcut near Negaunee, Michigan. Some quartz veins zigzag across the cut, and contain tiny arsenopyrite crystals. This is one of only a few arsenopyrite occurrences in the state of Michigan, and is certainly the most collectible. Photo taken in the late evening of Dec. 20 2015 during a very mild winter.