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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Montgomeryite from
Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia


00709200017364047058750.jpg
Montgomeryite

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
03161060017271982845604.jpg
Montgomeryite, etc.

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
08224130017271982863557.jpg
Montgomeryite

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
01389970017370776615655.jpg
Montgomeryite, etc.

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
00709200017364047058750.jpg
Montgomeryite

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
03161060017271982845604.jpg
Montgomeryite, etc.

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
08224130017271982863557.jpg
Montgomeryite

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
01389970017370776615655.jpg
Montgomeryite, etc.

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
07034410017368067881604.jpg
Montgomeryite

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
03161060017271982845604.jpg
Montgomeryite, etc.

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
08224130017271982863557.jpg
Montgomeryite

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
05341720017370776613154.jpg
Montgomeryite, etc.

Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
Locality type:Open-Cast Mine
Classification
Species:Montgomeryite
Formula:Ca4MgAl4(PO4)6(OH)4 · 12H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Variscite6
Hematite2
Data
Mineral Data:Click here to view Montgomeryite data
Locality Data:Click here to view Iron Monarch Main Pit, Iron Knob, Pastoral Unincorporated Area, South Australia, Australia
Photo GalleryView Gallery (13 photos)
Data Identifiers
Mindat Occurrence Record ID:69684
Long-form Identifier:1:3:69684:3
GUID (UUID V4):0
References
Pilkington, E. S., Segnit, E. R., Watts, J., Francis, G. (1979) Kleemanite, a new zinc aluminium phosphate. Mineralogical Magazine, 43 (325) 93-95 doi:10.1180/minmag.1979.043.325.03
 
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