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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Norsethite from
Kremikovtsi mine, Kremikovtsi, Stolichna Municipality, Sofia City Province, Bulgaria


Locality type:Open-Cast Mine
Classification
Species:Norsethite
Formula:BaMg(CO3)2
Chemical Analyses:
Oxide wt%:
1
BaO53.11 %
MgO11.28 %
MnO4.68 %
Total:69.07 %
Sample references:
1 -
Comments:Mn-, Ca-, and Fe-bearing varieties occur.
Habit:complex aggregates built by packets of fine platy crystals flattened on {0001}; sub-parallel aggregates of long prismatic crystals ending with sharp rhombohedra, which have faces c{0001}, m{1010} and a{1120}; clusters of needle prismatic crystals terminated by very sharp rhombohedra; spherulite aggregates with radiate fibrous structure.
Colour:pale yellow
Luminescent properties:weak dark red under UV = 366 nm, more brightly brownish red under UV = 254 nm.
Confirmation
Validity:Confirmed
Confirmation Methods:Optical Analysis
XRD
SEM-EDS
Ion Microprobe
Infrared Spectroscopy
Associated Minerals Based on Photo Data:
Calcite1
Data
Mineral Data:Click here to view Norsethite data
Locality Data:Click here to view Kremikovtsi mine, Kremikovtsi, Stolichna Municipality, Sofia City Province, Bulgaria
Photo GalleryView Gallery (12 photos)
Data Identifiers
Mindat Occurrence Record ID:135489
Long-form Identifier:1:3:135489:8
GUID (UUID V4):0
References
 
and/or  
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