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Esquema molecular
Arrastra para rotar · rueda o pinza para ampliar
Andradite
Ca3Fe2(SiO4)3
Description
Andradite is a mineral of the garnet group, characterized by its high calcium and iron content.
Chemical composition
Chemical formula
Ca3Fe2(SiO4)3
Classification
silicatos
Crystal system
cúbico
Luster
Vítreo a resinoso
Streak
Blanca
Density
3.86 g/cm³
Temperatura de fusión
1200 °C
Mohs Scale — 7/10
1
2
3
4
5
6
7
8
9
10
Referencia: Cuarzo
Color
#2e8b57
#8b4513
#000000
#9acd32
Verde amarillento, verde, marrón, negro
Usos
Uso cotidiano
Primarily used as a gemstone in jewelry and as a collector's item.
Uso industrial
Geological indicator in skarn deposit studies and mineral prospecting.
Similar minerals
Compare species
| Properties | Andradite | Grossular | Spessartine | Almandine |
|---|---|---|---|---|
| Chemical formula | Ca3Fe2(SiO4)3 | Ca3Al2(SiO4)3 | Mn3Al2(SiO4)3 | Fe3Al2(SiO4)3 |
| Classification | Silicates | Silicates | Silicates | Silicates |
| Crystal system | cúbico | cúbico | cúbico | cúbico |
| Hardness | 7 | 7 | 7.5 | 7.5 |
| Density | 3.86 g/cm³ | 3.6 g/cm³ | 4.19 g/cm³ | 4.3 g/cm³ |
| Luster | Vítreo a resinoso | Vítreo | Vítreo | vítreo a subresinoso |
| Streak | Blanca | Blanco | Blanca | blanca |
| Cleavage | Unknown | Unknown | Unknown | Unknown |
| Transparency | Unknown | Unknown | Unknown | Unknown |
Similar minerals: Grosularia · Almandino · Espesartina
Derivatives and uses
Varieties such as demantoid, topazolite, and melanite.
Geographic distribution
Extraction countries: Estados Unidos, Italia, México, Rusia, China
Periodic table
Contains elements: Ca · Fe · Si · O
O
Oxygen
#8 · Nonmetals
Atomic mass15.999 u
Density1.429 g/cm³
Melting point-218.8 °C
Boiling point-183 °C
StateGas
Alkali metalsAlkaline earth metalsTransition metalsPost-transition metalsMetalloidsNonmetalsHalogensNoble gasesLanthanidesActinides