Chemical Formula
The mineral with the chemical formula Cu
Copper
This mineral typically has a blue/purple tarnish, has a grey/black streak, hardness of 3 and has the chemical formula Cu5FeS4.
Bornite
This mineral is typically pink, has a white to pink streak, hardness of 3.5-4.5, is vitreous and has the chemical formula MnCO3.
Rhodochrosite
Name 2 typical distinguishing characteristics of sulphur.
Bright yellow colour & smells like rotten egg
Name 2 evaporite minerals
Halite, sylvite, anhydrite, gypsum
The chemical formula for Galena
PbS
This mineral is brass yellow, has a green-black streak, is metallic and massive with a hardness of 3.5-4. It has the chemical formula CuFeS2.
Chalcopyrite
This mineral is typically blue with a pale blue streak, hardness of 3.5-4 and is vitreous to dull. It has the chemical formula Cu(CO3)2(OH)2.
Azurite
Name a typical distinguishing characteristic of Calcite
Strong reaction with HCl (efferevence)
You can find this mineral in a writing utensil
Graphite
These two polymorphs have the chemical formula FeS2
Pyrite and Marcasite
This mineral varies in colour, has a white streak, hardness of 4, is typically cubic and fluoresces under UV.
Fluorite
This mineral varies in colour, has a hardness of 9 and is prismatic. Common gemstones are sapphire and ruby.
Corundum
Name a typical distinguishing characteristic of Magnetite
Strongly magnetic, black streak
List 1 occurrence for apatite
Teeth/bones, pegmatites
The chemical formula for Rutile
TiO2
This mineral has a grey/blue tint, a grey-blue streak, is laminar and is metallic. It has a hardness of 1.5 and has the chemical formula MoS2.
Molybdenite
Barite and Anhydrite are both commonly white, have a white streak and have a hardness of 3-3.5. How would you determine the difference?
Anhydrite is lighter than barite (density)
What sulfide has a yellow-orange streak?
Orpiment
This is a potash mineral with a hardness of 2 and tastes bitter.
Sylvite
The chemical formula for Apatite
Ca5(PO4)3(OH, F, Cl)
his mineral varies in colour but is commonly red, hardness of 8, is equant and has the formula MgAl2O4.
Spinel
What are two characteristics you might use to distinguish magnetite and chromite?
Strong vs weak magnetism & black vs brown streak
Name a typical distinguishing characteristic of Barite
Dense (heavy)
Pyrrhotite’s chemical formula is
Fe1-xS