| Rodalquilarite | |
|---|---|
 Rodalquilarite crystals from a cavity in alunite | |
| General | |
| Category | Tellurite mineral |
| Formula (repeating unit) | H3Fe3+2(Te4+O3)4Cl |
| IMA symbol | Raq[1] |
| Strunz classification | 4.JL.05 |
| Crystal system | Triclinic |
| Crystal class | Pinacoidal (1) (same H-M symbol) |
| Space group | P1 |
| Unit cell | a = 8.95 Å, b = 5.09 Å c = 6.63 Å; α = 103.17° β = 107.08°, γ = 77.87°; Z = 1 |
| Identification | |
| Color | Emerald- to grass-green |
| Crystal habit | Crusts of stout crystals |
| Cleavage | One good cleavage plane |
| Tenacity | Very brittle |
| Mohs scale hardness | 2 - 3 |
| Luster | Greasy |
| Streak | Greenish yellow |
| Diaphaneity | Semitransparent |
| Specific gravity | 4.97 - 5.15 |
| Optical properties | Biaxial (-) |
| Refractive index | nα = 2.100 nγ = 2.200 |
| Birefringence | δ = 0.100 |
| 2V angle | 38° |
| References | [2][3][4] |
Rodalquilarite is a rare iron tellurite chloride mineral with formula H3Fe3+2(Te4+O3)4Cl[2] or Fe2(TeO2OH)3(TeO3)Cl.[3] Rodalquilarite crystallizes in the triclinic system and typically occurs as stout green prisms and encrustations.
- ^ 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 Rodalquilarite in the Handbook of Mineralogy
- ^ a b Rodalquilarite on Mindat.org
- ^ Rodalquilarite data on Webmineral