광물학 용어사전
광물학과 광물 수집을 위한 핵심 용어와 정의.
Physical Properties
Phosphorescence
The continued emission of visible light by a mineral after the exciting radiation source has …
Streak
The color of a mineral's powder, typically observed by rubbing the mineral across an unglazed …
Density
The mass per unit volume of a mineral, typically expressed in grams per cubic centimeter. …
Fusibility
The ease with which a mineral melts when heated, rated on the von Kobell scale …
Thermal Conductivity
The rate at which a mineral transmits heat. Diamond has exceptionally high thermal conductivity; many …
Tenacity
A mineral's resistance to bending, breaking, crushing, or tearing. Terms include brittle, malleable, ductile, sectile, …
Mohs Hardness
A relative scale of mineral hardness from 1 (talc) to 10 (diamond), based on scratch …
Specific Gravity
The ratio of a mineral's weight to the weight of an equal volume of water. …
Electrical Conductivity
The ability of a mineral to conduct electrical current. Native metals and graphite are good …
Magnetism
The property of being attracted to a magnet, due to iron or other ferromagnetic elements …
Fracture
The way a mineral breaks when not along cleavage planes. Types include conchoidal (shell-like), uneven, …
Triboluminescence
The emission of light when a mineral is scratched, crushed, or rubbed. Sphalerite and fluorite …
Radioactivity
The emission of ionizing radiation by minerals containing unstable isotopes of uranium, thorium, or other …
Cleavage
The tendency of a mineral to break along flat planar surfaces determined by its crystal …