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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Sericite from
Porter Claim, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA


Locality type:Prospect
Classification
Species:Muscovite var: Sericite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Clinochlore1
- var Pennine1
Quartz1
Amphibole Supergroup1
- var Byssolite1
Data
Mineral Data:Click here to view Sericite data
Locality Data:Click here to view Porter Claim, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:802159
Long-form Identifier:1:3:802159:5
GUID (UUID V4):0
Nearest other occurrences of Sericite
1.2km (0.7 miles) ⓘCondor-Hemlock Mine, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
6.4km (4.0 miles) ⓘCrawford Creek Breccia, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
7.1km (4.4 miles) ⓘGreen Ridge, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
7.6km (4.7 miles) ⓘPurple Hope No. 4 claim, Purple Hope claims, Green Ridge, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
11.6km (7.2 miles) ⓘMineral Creek Mine (Durrwachter Mine; Liberty Lode Mine), Mineral Creek, Kittitas County, Washington, USA
16.2km (10.0 miles) ⓘRainy Mine, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
17.0km (10.6 miles) ⓘGifford Ridge, Middle Fork of the Snoqualmie River, Snoqualmie Mining District, King County, Washington, USA
17.2km (10.7 miles) ⓘCleopatra Mine, Miller River Mining District, King County, Washington, USA
17.9km (11.2 miles) ⓘBlack Dike Prospect, Miller River Mining District, King County, Washington, USA
18.5km (11.5 miles) ⓘBear Basin Mines, Buena Vista Mining District, King County, Washington, USA
References
Steve Satra specimens
 
and/or  
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