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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Hornblende Root Name Group from
Huken Quarry, Grorud, Oslo, Norway


Locality type:Quarry
Classification
Species:'Hornblende Root Name Group' (not an IMA approved species)
Formula:◻Ca2(C42+C3+)(AlSi7O22)W2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hornblende Root Name Group data
Locality Data:Click here to view Huken Quarry, Grorud, Oslo, Norway
Data Identifiers
Mindat Occurrence Record ID:169684
Long-form Identifier:1:3:169684:4
GUID (UUID V4):0
Nearest other occurrences of Hornblende Root Name Group
2.5km (1.6 miles) ⓘKristiansen Quarry (Bånkall Quarry), Bånkall, Grorud, Oslo, Norway
3.3km (2.1 miles) ⓘTonsenplassen, Oslomarka, Oslo, Norway
17.1km (10.6 miles) ⓘHaga Prospects, Bærum (Baerum), Akershus, Norway
24.3km (15.1 miles) ⓘRambydalen Quarry, Ullensaker, Akershus, Norway
33.3km (20.7 miles) ⓘKalkovnen, Østhagan Nature Reserve, Grua mining district, Lunner, Akershus, Norway
34.7km (21.5 miles) ⓘMidtmoen, Øståsen, Lunner, Akershus, Norway
56.8km (35.3 miles) ⓘSkuterud Mines, Modum West, Modum, Buskerud, Norway
85.9km (53.4 miles) ⓘJerngruvevannet, Kongsberg, Buskerud, Norway
References
 
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