| Leucophoenicite | |
|---|---|
 Leucophoenicite from the Wessels Mine in Kuruman, South Africa. | |
| General | |
| Category | Nesosilicates[1] |
| Formula (repeating unit) | Mn7(SiO4)3(OH)2 |
| IMA symbol | Lpo[2] |
| Strunz classification | 9.AF.60[1] |
| Dana classification | 52.3.2c.2[1] |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | P21/a |
| Unit cell | a = 10.84 Å b = 4.82 Å c = 11.32 Å β = 103.93°;[1] Z = 2 |
| Identification | |
| Cleavage | Imperfect on {001} |
| Tenacity | Brittle |
| Mohs scale hardness | 5.5 to 6 |
| Luster | Vitreous |
| Diaphaneity | Transparent to translucent |
| Optical properties | Biaxial (−) |
| Refractive index | nα = 1.751 nβ = 1.771 nγ = 1.782[1] |
| Birefringence | δ = 0.031[1] |
| Pleochroism | Faint; rose-red ∥ {001} Colorless ⊥ {001} |
| 2V angle | 74° (measured) |
| Ultraviolet fluorescence | Non-fluorescent[3] |
| References | [4] |
Leucophoenicite is a mineral with formula Mn7(SiO4)3(OH)2. Generally brown to red or pink in color, the mineral gets its name from the Greek words meaning "pale purple-red". Leucophoenicite was discovered in New Jersey, US and identified as a new mineral in 1899.
- ^ a b c d e f "Leucophoenicite". Mindat. Retrieved July 3, 2012.
- ^ 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.
- ^ "Leucophoenicite". Webmineral. Retrieved July 3, 2012.
- ^ "Leucophoenicite" (PDF). Handbook of Mineralogy. Mineral Data Publishing. Retrieved July 3, 2012.