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Andradite is a mineral species of the garnet group. It is a nesosilicate, with chemical formula Ca3Fe2Si3O12.
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color demantoid also titanium group melanite black iron garnet occurrence mineral formula brownish opaque translucent green topazolite yellow-green references found
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Andradite | Absorption spectra | demantoid – 440 nm band or complete absorption at 440 nm and below, may also have lines at 618, 634, 685, 690 nm | 1.00 | infobox |
| Andradite | Category | Garnet group | 1.00 | infobox |
| Andradite | Cleavage | none | 1.00 | infobox |
| Andradite | Color | Yellow, greenish yellow to emerald-green, dark green; brown, brownish red, brownish yellow; grayish black, black; may be sectored | 1.00 | infobox |
| Andradite | Crystal class | Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) | 1.00 | infobox |
| Andradite | Crystal habit | Commonly well-crystallized dodecahedra, trapezohedra, or combinations, also granular to massive | 1.00 | infobox |
| Andradite | Crystal system | Cubic | 1.00 | infobox |
| Andradite | Demantoid | transparent light to dark green to yellow-green | 1.00 | infobox |
| Andradite | Diaphaneity | Transparent to translucent | 1.00 | infobox |
| Andradite | Formula | Ca3Fe2(SiO4)3 | 1.00 | infobox |
| Andradite | Fracture | conchoidal to uneven | 1.00 | infobox |
| Andradite | IMA symbol | Adr | 1.00 | infobox |
| Andradite | Luster | Adamantine to resinous, dull | 1.00 | infobox |
| Andradite | Melanite | opaque black | 1.00 | infobox |
| Andradite | Mohs scale hardness | 6.5 to 7 | 1.00 | infobox |
| Andradite | Optical properties | Isotropic, typically weakly anisotropic | 1.00 | infobox |
| Andradite | Refractive index | n = 1.887 | 1.00 | infobox |
| Andradite | Space group | Ia3d | 1.00 | infobox |
| Andradite | Specific gravity | 3.859 calculated; 3.8–3.9 measured | 1.00 | infobox |
| Andradite | Streak | White | 1.00 | infobox |
| Andradite | Strunz classification | 9.AD.25 | 1.00 | infobox |
| Andradite | Tenacity | Brittle | 1.00 | infobox |
| Andradite | Topazolite | transparent to translucent yellow, may show chatoyancy | 1.00 | infobox |
| Andradite | Unit cell | a = 12.056 Å; Z = 8 | 1.00 | infobox |
| Andradite | is a | mineral species of the garnet group | 0.90 | text |
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