Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Chlorastrolite from
No. 3 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA


Locality type:Shaft
Classification
Species:Pumpellyite-(Mg) var: Chlorastrolite
Formula:Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chlorastrolite data
Locality Data:Click here to view No. 3 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:1596281
Long-form Identifier:1:3:1596281:0
GUID (UUID V4):0
Nearest other occurrences of Chlorastrolite
0.7km (0.4 miles) ⓘNo. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
14.1km (8.8 miles) ⓘArcadian Mine, Ripley, Franklin Township, Houghton County, Michigan, USA
15.6km (9.7 miles) ⓘCliff Mine, Allouez Township, Keweenaw County, Michigan, USA
17.3km (10.7 miles) ⓘQuincy Mine, Quincy Township, Houghton County, Michigan, USA
18.8km (11.7 miles) ⓘPhoenix Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA
19.5km (12.1 miles) ⓘSt. Clair Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA
24.3km (15.1 miles) ⓘCentral Mine, Central, Houghton Township, Keweenaw County, Michigan, USA
24.8km (15.4 miles) ⓘNorthwestern Mine, Central, Houghton Township, Keweenaw County, Michigan, USA
24.8km (15.4 miles) ⓘCentral Exploration Mine, Central, Houghton Township, Keweenaw County, Michigan, USA
26.2km (16.3 miles) ⓘCopper Falls, Eagle Harbor Township, Keweenaw County, Michigan, USA
References
Locality description Centennial MineIdentification: Visual Identification
 
and/or  
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