Wagnerite (Weight: 100 g) – Place of discovery: Werfen, Salzburg, Austria — Photo: Raimond Spekking · CC BY-SA 4.0
Wagnerite
A magnesium-iron fluorophosphate of pegmatites, named for Munich mining official Franz von Wagner.
Intro adapted from Wikipedia (CC BY-SA).
Wagnerite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Mg₂(PO₄)F.
It crystallizes in the monoclinic crystal system (space group P2_1/c). It is a member of the Wagnerite structural group.
Key properties: Mohs hardness 5–5.5; specific gravity 3.15; Vitreous to slightly resinous luster; optically biaxial.
IMA symbol Wag, IMA status: approved, named in 1821.
Found as a rare accessory mineral in metamorphic rocks of moderate to high grade; uncommon in pegmatites.
It is found associated with Lazulite, ferroan magnesite, chlorite (Höllgraben, Austria); corundum, sillimanite, plagioclase, biotite, monazite-(Ce), apatite, andalusite.
The mineral was named to honor F.M. von Wagner (1768–1851), mining official in Munich, Germany.