22 Multiple choice questions
- The study of minerals.
- A mineral or form of a mineral that is particularly beautiful and/or rare, and thus has value.
- The flat surface of an euhedral mineral grain.
- The general shape of a crystal or cluster of crystals that grew unimpeded.
- A list of ten minerals in a sequence of relative hardness, with which other minerals can be compared.
- The way a mineral surface scatters light.
- The flat surface of a cut gemstone; facets are produced by grinding.
- A cavity in which euhedral crystals precipitate out of water solutions passing through a rock.
- Minerals composed of silicon-oxygen tetrahedra linked in various arrangements; most contain other elements as well.
number representing the density of a mineral, as specified by the ratio
between the weight of a volume of the mineral and the weight of an
equal volume of water.
- The internal arrangement of atoms or ions within a crystal.
homogenous, naturally occurring, solid inorganic substance with a
definable chemical composition and an internal structure characterized
by an orderly arrangement of atoms, ions, or molecules in a lattice.
Most minerals are inorganic.
- (1) The tendency of a mineral to break along preferred planes; (2) a type of foliation in low-grade metamorphic rock.
- Smoothly curving, clamshell-shaped surfaces along which materials with no cleavage planes tend to break.
- The condition in which the shape of one part of an object is a mirror image of the other part.
- In mineralogy, hardness refers to the resistance of a mineral to scratching; a harder mineral can scratch a softer mineral.
- The basic building block of silicate minerals; it consists of one silicon atom surrounded by four oxygen atoms.
- The orderly framework within which the atoms or ions of a mineral are fixed.
- Two minerals that have the same chemical composition but a different crystal lattice structure.
- Rocks containing calcite and/or dolomite.
- The color of the powder produced by pulverizing a mineral on an unglazed ceramic plate.
- A single, continuous piece of a mineral bounded by flat surfaces that formed naturally as the mineral grew.