Nephrite
Rock / aggregate
Nephrite is tough, compact tremolite-actinolite amphibole rock. It is a polycrystalline material rather than a single mineral species; its dominant component is Tremolite.
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About Tremolite (major)
Full reference data — crystallography, X-ray diffraction, and cited physical properties — is on the Tremolite species page.
| Formula | ܆Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2 |
|---|---|
| Density (calculated) | 2.987 |
| Crystal system | monoclinic |
| Streak | white |
About Actinolite (major)
Full reference data — crystallography, X-ray diffraction, and cited physical properties — is on the Actinolite species page.
| Formula | ܆Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2 |
|---|---|
| Density (calculated) | 3.117 |
| Crystal system | monoclinic |
| Streak | white |