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Saponite from
Laurium Mine, Laurium, Houghton Co., Michigan, USA

Locality type:Mine
Formula:Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Comments:Any crystals of smectite are astonishing. This locality and several nearby produce the world's best saponite crystals.
Habit:Radial sprays of white acicular crystals to 1 mm!
Colour:White, sometimes has light red or green coloring.
Quality for species:Excellent - world class for species or very significant. (!!)
Abundance at site:Common
Confirmation Methods:XRD
References:Collection Elmar Lackner; Robinson, George, 2004, Mineralogy of Michigan
Associated Minerals Based on Photo Data:
Quartz4 photos of Saponite associated with Quartz at this locality.
Epidote3 photos of Saponite associated with Epidote at this locality.
Calcite2 photos of Saponite associated with Calcite at this locality.
Pumpellyite1 photo of Saponite associated with Pumpellyite at this locality.
Pumpellyite-(Mg)1 photo of Saponite associated with Pumpellyite-(Mg) at this locality.
Mineral Data:Click here to view Saponite data
Locality Data:Click here to view Laurium Mine, Laurium, Houghton Co., Michigan, USA
Photo GalleryView Gallery (3 photos)
Nearest other occurrences of Saponite
0.7km (0.5 miles) Osceola Amygdaloid, Osceola, Houghton Co., Michigan, USA
1.4km (0.9 miles) La Salle Mine, Osceola, Houghton Co., Michigan, USA
3.2km (2.0 miles) Calumet, Calumet Township, Houghton Co., Michigan, USA
3.3km (2.1 miles) Tamarack Mine, Tamarack, Calumet Township, Houghton Co., Michigan, USA
4.0km (2.5 miles) St. Louis Mine Exploration, Laurium, Houghton Co., Michigan, USA
5.0km (3.1 miles) No. 2 shaft, Centennial Mine, Centennial Heights, Houghton Co., Michigan, USA
5.7km (3.6 miles) South Kearsarge Mine, Kearsarge, Houghton Co., Michigan, USA
10.5km (6.5 miles) Ahmeek Mine, Ahmeek, Keweenaw Co., Michigan, USA
14.1km (8.7 miles) Iroquois Mine, Mohawk, Keweenaw Co., Michigan, USA
16.2km (10.0 miles) Isle Royale Mines, Houghton, Houghton Co., Michigan, USA
Mineral and/or Locality  
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