Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Saponite from
Isle Royal Mines, Portage Township, Houghton County, Michigan, USA


Locality type:Mine
Classification
Species:Saponite
Formula:Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Habit:Acicular crystals in cluster to 1 mm.
Colour:Usually white
Quality for species:Excellent - world class for species or very significant. (!!)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Saponite data
Locality Data:Click here to view Isle Royal Mines, Portage Township, Houghton County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:70203
Long-form Identifier:1:3:70203:8
GUID (UUID V4):0
Nearest other occurrences of Saponite
14.8km (9.2 miles) ⓘLa Salle Mine, Osceola Township, Houghton County, Michigan, USA
16.2km (10.0 miles) ⓘLaurium Mine, Osceola Township, Houghton County, Michigan, USA
16.9km (10.5 miles) ⓘOsceola Amygdaloid, Osceola Township, Houghton County, Michigan, USA
18.8km (11.7 miles) ⓘTamarack Mine, Tamarack, Osceola Township, Houghton County, Michigan, USA
19.8km (12.3 miles) ⓘSt. Louis Mine Exploration, Schoolcraft Township, Houghton County, Michigan, USA
21.3km (13.2 miles) ⓘNo. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
21.9km (13.6 miles) ⓘSouth Kearsarge Mine, Kearsarge, Calumet Township, Houghton County, Michigan, USA
23.1km (14.3 miles) ⓘWolverine No. 2 shaft, Wolverine Mine, Wolverine, Calumet Township, Houghton County, Michigan, USA
23.3km (14.5 miles) ⓘKearsarge Mine, Kearsarge, Calumet Township, Houghton County, Michigan, USA
26.6km (16.5 miles) ⓘAhmeek Mine, Ahmeek, Allouez Township, Keweenaw County, Michigan, USA
References
Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109
 
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