Clinohedrite
CaZn(SiO4)·H2OIMA symbol: Cnhgrandfathered
Clinohedrite is a silicate mineral with the formula CaZn(SiO4)·H2O, crystallizing in the monoclinic system. It has a Mohs hardness of 5.5, typically brown or gray in color, a specific gravity of 3.09. Its streak is white.
Photos
Crystallography
| Crystal system | monoclinic crystal systemWikidata (CC0) |
|---|---|
| Space group | C 1 c 1 |
| Cell (Å, °) | a = 5.09, b = 15.829, c = 5.386; α = 90, β = 103.26, γ = 90 |
| Cell volume | 422.379 ų, Z = 4 |
| Axial ratios | 0.3216:1:0.3403calculated from COD 9008260 |
| Source structure | COD 9008260 (Zeitschrift fur Kristallographie, 1976) |
Powder X-ray diffraction (calculated)
| d (Å) | 2.766 | 3.238 | 7.915 | 2.506 | 3.97 | 2.364 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 69.4 | 58.9 | 53.4 | 45.4 | 24.4 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9008260; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 3.39 g/cm³calculated from COD 9008260 |
|---|---|
| Hardness (Mohs) | 5.5single sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Specific gravity | 3.09 g/cm3single sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Color | brown, graysingle sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Streak | whitesingle sourceWikidata (CC0) |
Chemistry (calculated)
| Molecular weight | 215.59 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Ca 18.59%, Zn 30.34%, Si 13.03%, O 37.11%, H 0.94% |
Classification
| Nickel-Strunz (10th) | 9.AE.30Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 9.AE.30Wikidata (CC0) |