Global InformationParascorodite information
| Parascorodite | |
|---|---|
| General | |
| Category | Secondary Iron Arsenate |
| Formula (repeating unit) | FeAsO4·2H2O |
| IMA symbol | Pscd[1] |
| Crystal system | Hexagonal |
| Crystal class | 6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal |
| Unit cell | = 8.9327(5)Å, = 9.9391(8)Å, = 686.83(8)Å3 |
| Identification | |
| Color | yellow-white, green-grey, white |
| Crystal habit | irregular or fan-like aggregates, crystals are prismatic or thin flakes |
| Tenacity | sectile |
| Mohs scale hardness | 1-2 |
| Luster | earthy or vitreous |
| Streak | yellow-white |
| Specific gravity | 3.358 |
| Solubility | soluble in HCl |
| References | [2][3] |
Parascorodite is a rare, secondary iron-arsenate mineral. It has a chemical formula of (FeAsO4·2H2O) and was discovered in 1967 using X-ray powder diffraction methods, when an unknown substance was found along with scorodite on medieval ore dumps in the Czech Republic. The holotype of parascorodite can be found in the mineralogical collection of the National Museum, Prague, Czech Republic under acquisition number P1p25/98.[2]
- ^ 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 Petr Ondrus; Roman Skala; Cecilia Viti; Frantisek Veselovsky; Frantisek Novak; Jiri Jansa (1999). "Parascorodite, FeAsO4.2H2O; a new mineral from Kank near Kutna Hora, Czech Republic". American Mineralogist. 84 (9): 1439–1444. Bibcode:1999AmMin..84.1439O. doi:10.2138/am-1999-0923. S2CID 96652206.
- ^ Perchiazzi, N., Ondruš, P., Skála, R. (2004): Ab-initio X-ray powder structure determination of parascorodite, Fe(H2O)2AsO4. European Journal of Mineralogy 16, 1003-1007.