Mineral guide Carley Moses
Gypsum • • • • • • •
Luster: non metalic Cleavage: (010) Fracture: fiberous Colour: colourless or white Streak: white Hardness: softer than a finger nail Mos: 1.5-2
Graphite • • • • • • •
Luster: metalic Cleavage: basel Fracture: flakey Colour: black Streak: black Hardness: harder tha a finger nail Mos: 1-2
pyite • • • • • • •
Luster: metalic Cleavage: indistinct Fracture: very uneven Colour: gold Streak: gray Hardness: harder than a finger nail Moes: 6-6.5
Feldspar • • • • • • •
Luster: non-metalic Cleavage: triclinic Fracture: along cleavage planes Colour: red Streak: colourless or white Hardness: harder than glass Moes: 6-6.5
Quartz • • • • • • •
Luster: non-metalic Cleavage:indistinct Fracture: conchoidal Colour: colourless Streak: colourless Hardness: harder than glass Moes: 7
Biotite mica • • • • • • •
Luster: non-metalic Cleavage: perfect on (001) Fracture: micaeous Colour: brown Streak: white Hardness: softer than a finger nail Moes: 2.5-3
magnetite • • • • • • •
Luster: metalic Cleavage: indistrict Fracture: uneven Colour: black Streak: black Hardness: harder than glass Moes: 5.5-6.5
Talc • • • • • • •
Luster: non-metalic Cleavage: basal Fracture: flat surfaces Colour: light green Streak: white Hardness: softer than a finger nail Moes: 1
Hematite • • • • • • •
Luster: non-metalic Cleavage: non Fracture: uneven Colour: red Streak: red Hardness: harder than a finger nail Moes: 5.5-6.5
Barite • • • • • • •
Luster: non-metalic Cleavage: perfect along parallel to the base Fracture: irregular/uneven Colour: red/gray Streak: white Hardness: harder than a finger nail Moes: 3-3.5
Calcite • • • • • • •
Luster: non-metalic Cleavage: perfect on (1011) Fracture: conchoidal Colour: white Streak: white Hardness: harder than a finger nail Moes: 3
Fluorite • • • • • • •
Luster: Cleavage: ortachedral Fracture: subconchoidal to uneven Colour: all of the above Streak: white Hardness: harder than a finger nail Moes: 4
Galena • • • • • • •
Luster: metalic Cleavage: cubic Fracture: subconchoidal Colour: gray to silver Streak: lead gray Hardness: harder than a finger nail Moes: 2.5
Halite • • • • • • •
Luster: non-metalic Cleavage: perfect 3 direction cubic Fracture: conchiodal Colour: colourless or white Streak: white Hardness: harder than a finger nail Moes: 2-2.5
Muscovite mica • • • • • • •
Luster: metalic Cleavage: perfect Fracture: micaceous Colour: gold Streak: white Hardness: softer than a finger nail Moes: 2
sulfur • • • • • • •
Luster: non-metalic Cleavage: none Fracture: smooth Colour: bright yellow Streak: yellow Hardness: softer than a finger nail Moes: 1.5
•THE END