Serpierite
Ca(Cu,Zn)4(SO4)2(OH)6·3H2OIMA symbol: Spegrandfathered
Serpierite is a sulfate mineral with the formula Ca(Cu,Zn)4(SO4)2(OH)6·3H2O, crystallizing in the monoclinic system. It has a Mohs hardness of 2-5, typically green in color, with a pearly luster, a specific gravity of 2.103.
Photos
Crystallography
| Crystal system | monoclinic crystal systemWikidata (CC0) |
|---|---|
| Space group | C 1 2/c 1 |
| Cell (Å, °) | a = 22.186, b = 6.25, c = 21.853; α = 90, β = 113.36, γ = 90 |
| Cell volume | 2781.81 ų, Z = 8 |
| Axial ratios | 3.5498:1:3.4965calculated from COD 9007505 |
| Source structure | COD 9007505 (Acta Crystallographica, Section B, 1968) |
Powder X-ray diffraction (calculated)
| d (Å) | 10.184 | 5.092 | 3.395 | 2.652 | 2.445 | 2.173 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 31.3 | 23 | 18.8 | 15.7 | 12.4 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9007505; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 3.022 g/cm³calculated from COD 9007505 |
|---|---|
| Hardness (Mohs) | 2-5single sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Specific gravity | 2.103 g/cm3single sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Color | greensingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | pearlysingle sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
Classification
| Nickel-Strunz (10th) | 7.DD.30Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 7.DD.30Wikidata (CC0) |