Wagnerite
(Mg,Fe2+)2PO4FIMA symbol Wag[1] Strunz classification 8.BB.15 Dana classification 41.6.2.1 Crystal system Monoclinic Crystal class Prismatic (2/m) Space group P21/a’’ Identification Color Yellow, grayish, red, reddish brown, brown, green Crystal habit Elongate and striated prisms, tabular, massive Cleavage {100} imperfect, {120} imperfect Fracture Sub-conchoidal, splintery Tenacity Brittle Mohs scale hardness 5–5.5 Luster Vitreous, resinous Diaphaneity Translucent, nearly opaque Specific gravity 3.15 Density 3.15 (measured), 3.15 (calculated) Optical properties Biaxial (+), colorless (transmitted light) Pleochroism None 2V angle 25°–35° (measured) Solubility Soluble in acids References [2][3][4]
Wagnerite is a mineral, a combined phosphate and fluoride of iron and magnesium, with the formula (Mg,Fe2+)2PO4F.[2][3] It occurs in pegmatite associated with other phosphate minerals.[4] It is named after Franz Michael von Wagner (1768–1851), a German mining official in Munich.[2]
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b c Mindat – Wagnerite
- ^ a b Webmineral – Wagnerite
- ^ a b Handbook of Mineralogy – Wagnerite
Bibliography
- Palache, P.; Berman H.; Frondel, C. (1960). "Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)" John Wiley and Sons, Inc., New York, pp. 845–847.
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