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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Muscovite from
Tinfoss Jernverks Quartz Quarry, Lake Heddal, Notodden, Telemark, Norway


Locality type:Quarry
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Tinfoss Jernverks Quartz Quarry, Lake Heddal, Notodden, Telemark, Norway
Data Identifiers
Mindat Occurrence Record ID:88465
Long-form Identifier:1:3:88465:1
GUID (UUID V4):0
Nearest other occurrences of Muscovite
24.2km (15.0 miles) ⓘHellig Trefoldighet Mine, Underberget Mining Field, Kongsberg, Buskerud, Norway
24.5km (15.2 miles) ⓘRomsdalen, Siljan, Telemark, Norway
26.8km (16.7 miles) ⓘHydro Quarry, Nome, Telemark, Norway
27.5km (17.1 miles) ⓘKløvnatten, Flesberg, Buskerud, Norway
28.5km (17.7 miles) ⓘVibeto Farm, Nome, Telemark, Norway
29.0km (18.0 miles) ⓘRauberen, Lake Mykle, Kongsberg, Buskerud, Norway
29.6km (18.4 miles) ⓘValders Mine, Vinoren Southern Mines, Vinoren Silver Mine Field, Flesberg, Buskerud, Norway
30.1km (18.7 miles) ⓘPrebgruven, Skien, Telemark, Norway
30.3km (18.8 miles) ⓘBåtli Prospect, Vinoren Southern Mines, Vinoren Silver Mine Field, Flesberg, Buskerud, Norway
34.5km (21.4 miles) ⓘSandvann, Flesberg, Buskerud, Norway
References
Werner, Ronald (1998) Tinfos jernverks kvartsbrudd. Turkis fra Notodden [Tinfos Iron works quartz quarry. Turquoise from Notodden]. STEIN. Nordisk magasin for populær geologi, 25 (2) 6-7
 
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