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Esquema molecular
Arrastra para rotar · rueda o pinza para ampliar
Anorthosite
CaAl2Si2O8
Description
Plutonic igneous rock composed almost entirely of calcium-rich plagioclase.
Chemical composition
Chemical formula
CaAl2Si2O8
Classification
silicatos
Crystal system
triclínico
Luster
vítreo
Streak
blanca
Density
2.7 g/cm³
Temperatura de fusión
1550 °C
Mohs Scale — 6/10
1
2
3
4
5
6
7
8
9
10
Referencia: Ortosa
Color
#dcdcdc
#ffffff
#808080
Gris a blanco
Usos
Uso cotidiano
Construction material, countertops, and flooring.
Uso industrial
Thermal insulation, aerospace industry, and fluxes.
Similar minerals
Compare species
| Properties | Anorthosite | Gabbro | Albite |
|---|---|---|---|
| Chemical formula | CaAl2Si2O8 | Mg,Fe-silicates, Ca-plagioclase, Pyroxene | NaAlSi3O8 |
| Classification | Silicates | Silicates | Silicates |
| Crystal system | triclínico | monoclínico | triclínico |
| Hardness | 6 | 6 | 6 |
| Density | 2.7 g/cm³ | 3 g/cm³ | 2.62 g/cm³ |
| Luster | vítreo | Vítreo a mate | Vítreo |
| Streak | blanca | Blanco | Blanca |
| Cleavage | Unknown | Unknown | Unknown |
| Transparency | Unknown | Unknown | Unknown |
Similar minerals: Gabro · Norita · Albita
Derivatives and uses
Advanced ceramics, borosilicate glasses.
Geographic distribution
Extraction countries: Noruega, Canadá, Estados Unidos, Sudáfrica, Madagascar
Periodic table
Contains elements: Ca · Al · 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