Mineral Properties

Mineral: ALBITE

Class: silicate

Color: colorless white gray green
Streak: colorless
Luster: vitreous pearly
Transparency: transparent translucent subtranslucent
Hardness between: 6 and: 7
Tenacity: brittle
Cleavage: perfect imperfect Direction of Cleavage: one more than three
Fracture: conchoidal even uneven
Density (Specific Gravity) between: 2.59999990463257 and: 2.63
Formula: NaAlSi3O8
Crystal: triclinic Crystal Habit: massive lamellar granular
Occurs with:  
Rarity: Very Common
Dana Number: 545

Comment: Opalescent

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Mineral: AMBER

Class: organic (see "more information" below for details)

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Mineral: ARKOSE

Class: sedimentary rock (see "more information" below for details)

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Mineral: AUGITE

Class: silicate

Color: white green black
Streak: white green
Luster: vitreous resinous pearly
Transparency: translucent opaque
Hardness between: 5 and: 6.5
Tenacity: brittle
Cleavage: perfect interrupted Direction of Cleavage: two
Fracture: conchoidal uneven
Density (Specific Gravity) between: 3.2 and: 3.6
Formula: (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6
Crystal: monoclinic Crystal Habit: massive fibrous columnar granular fine coarse
Occurs with: olivine, biotite, nepheline, albite, apatite, serpentine, leucite, hornblende
Rarity: Very Common
Dana Number: 555

Comment: Magnetic after heating

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Mineral: AZURITE

Class: carbonate

Color: blue
Streak: blue
Luster: vitreous adamantine
Transparency: transparent subtranslucent
Hardness between: 3.5 and: 4
Tenacity: brittle
Cleavage: perfect imperfect Direction of Cleavage: two
Fracture: conchoidal
Density (Specific Gravity) between: 3.77 and: 3.89
Formula: Cu3(CO3)2(OH)2
Crystal: monoclinic Crystal Habit: massive columnar
Occurs with:  
Rarity: Rare
Dana Number: 528

Comment:  

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