Wagnerite

This article is about a mineral. For followers of Richard Wagner, see Wagnerism. For a member of the paramilitary Wagner Group, see Wagner Group.

Wagnerite
General
Category	Phosphate mineral
Formula (repeating unit)	(Mg,Fe^2+)2PO4F
IMA 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

1. 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.
2. Mindat – Wagnerite
3. Webmineral – Wagnerite
4. 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.