Mineralpedia Details for Calcioferrite
Calcioferrite
Named in reference to the calcium (calci) and iron (Latin: ferrum) in the composition of the mineral. Calcioferrite is a rare mineral that can be found in localities in Germany, the Cape Verde Islands off the West coast of Africa, Australia, and Kazakhstan among only a few others. It occurs in nodules in clay and in phosphatic clay. Associated minerals include montgoneryite, jarosite, cacoxenite, tinticite, apatite, and pyrite.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/calcioferrite.pdf
- Formula
- Ca4MgFe3+4(PO4)6(OH)4ยท12H2O
- Crystal System
- Monoclinic
- Crystal Habit
- Foliated, Reniform
- Cleavage
- Perfect, Very Good, None
- Luster
- Pearly
- Color
- greenish yellow, yellow, yellow green, yellowish white
- Streak
- yellowish white
- Class
- Monoclinic - Sphenoidal
- Fracture
- Brittle
- Hardness
- 2.5
- WebMineral
- View Calcioferrite
- Mindat
- View Calcioferrite
Calcioferrite from Klemm's Quarry, Moculta, South Australia, Australia
Thin, Pale yellow plates to less than 0.5mm in tiny pockets in limonitic matrix.
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Calcioferrite from Bruguers, Barcelona Province, Spain
Green nodules to 4mm in chalky white Tinticite.
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Calcioferrite from Tom's Phosphate quarry, Kapunda, South Australia, Australia
Light yellow crystal groups to 1mm. These crystals are very nice, some of the best I've seen.
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