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 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]
Quick facts General, Category ...
| Wagnerite |
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| Category | Phosphate mineral |
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| Formula | (Mg,Fe2+)2PO4F |
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| IMA symbol | Wag[1] |
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| Strunz classification | 8.BB.15 |
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| Dana classification | 41.6.2.1 |
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| Crystal system | Monoclinic |
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| Crystal class | Prismatic (2/m) |
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| Space group | P21/a’’ |
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| Color | Yellow, grayish, red, reddish brown, brown, green |
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| Crystal habit | Elongate and striated prisms, tabular, massive |
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| Cleavage | {100} imperfect, {120} imperfect |
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| Fracture | Sub-conchoidal, splintery |
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| Tenacity | Brittle |
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| Mohs scale hardness | 5–5.5 |
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| Luster | Vitreous, resinous |
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| Diaphaneity | Translucent, nearly opaque |
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| Specific gravity | 3.15 |
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| Density | 3.15 (measured), 3.15 (calculated) |
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| Optical properties | Biaxial (+), colorless (transmitted light) |
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| Pleochroism | None |
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| 2V angle | 25°–35° (measured) |
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| Solubility | Soluble in acids |
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| References | [2][3][4] |
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