Minerals Flashcards
Mineral
A naturally occurring and inorganic compound whose composition can be expressed as a chemical formula
Native mineral
A mineral composed of a single element
Compound mineral
Made of a combination of elements
Accessory mineral
Minerals occurring within a rock in small quantities
Lustre
The surface appearance of the mineral
Habit
The shape of the mineral
Cleavage
Planes of weakness in the mineral
Fracture
the way the mineral breaks if no cleavage is present
Order of minerals in Mohs scale of hardness
Talc Gypsum Calcite Fluorite Apatite Feldspar Quartz Topaz Corundum Diamond
Twinning
When 2 or more crystals grow with different orientations from a common plane
Silicate minerals
Minerals composed of silicon and oxygen
Bridging oxygen
An O2 atom shared by 2 SiO4 tetrahedra in a crystal structure
Rock
A naturally occurring substance composed of an aggregate of 1 or more minerals
Weathering
The in situ breakdown of material by mechanical and chemical processes
Erosion
A process whereby particles are detached from rock by the action of wind water and ice