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Saponite from
Laurium Mine, Osceola Township, Houghton County, Michigan, USA


Locality type:Mine
Classification
Species:Saponite
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
Validity:Confirmed
Confirmation Methods:XRD
Associated Minerals Based on Photo Data:
Quartz18
Epidote17
Calcite5
Pumpellyite Subgroup3
Malachite3
Kinoite2
Pumpellyite-(Mg)2
Chalcocite1
Analcime1
Data
Mineral Data:Click here to view Saponite data
Locality Data:Click here to view Laurium Mine, Osceola Township, Houghton County, Michigan, USA
Photo GalleryView Gallery (17 photos)
Data Identifiers
Mindat Occurrence Record ID:414494
Long-form Identifier:1:3:414494:6
GUID (UUID V4):0
Nearest other occurrences of Saponite
0.7km (0.5 miles) Osceola Amygdaloid, Osceola Township, Houghton County, Michigan, USA
1.4km (0.9 miles) La Salle Mine, Osceola Township, Houghton County, Michigan, USA
3.3km (2.1 miles) Tamarack Mine, Tamarack, Osceola Township, Houghton County, Michigan, USA
4.2km (2.6 miles) St. Louis Mine Exploration, Schoolcraft Township, Houghton County, Michigan, USA
5.1km (3.2 miles) No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
5.7km (3.6 miles) South Kearsarge Mine, Kearsarge, Calumet Township, Houghton County, Michigan, USA
6.9km (4.3 miles) Wolverine No. 2 shaft, Wolverine Mine, Wolverine, Calumet Township, Houghton County, Michigan, USA
7.2km (4.4 miles) Kearsarge Mine, Kearsarge, Calumet Township, Houghton County, Michigan, USA
10.5km (6.5 miles) Ahmeek Mine, Ahmeek, Allouez Township, Keweenaw County, Michigan, USA
14.1km (8.7 miles) Iroquois Mine, Seneca, Allouez Township, Keweenaw County, Michigan, USA
References
 
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