geo chapter 3

Created by Wello49 

Upgrade to
remove ads

carbonates

minerals that contain combinations of carbon and oxygen in their chemical structure.

cleavage

the tendency of a mineral to break along preferred planes

conchoidal fracture

A broken surface with concentric, raised surface markings looking similar to the ridges on a seashell (see also fracture).

crystal

a rock formed by the solidification of a substance

crystal face

the flat surface of an euhedral mineral grain

crystal habit

the general shape of a crystal or cluster of crystals that grew unimpeded

crystal lattice

the orderly framework within which the atoms or ions within a crystal

crystal structure

the internal arrangement of atoms or ions within a crystal

facet

a smooth surface (as of a bone or cut gemstone)

gem

art highly prized for its beauty or perfection

geode

(mineralogy) a hollow rock or nodule with the cavity usually lined with crystals

hardness

a measure of how easily a mineral can be scratched

luster

the visual property of something that shines with reflected light

mineral

solid homogeneous inorganic substances occurring in nature having a definite chemical composition

mineralogy

the branch of geology that studies minerals: their structure and properties and the ways of distinguishing them

Mohs hardness scale

a scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals

polymorph

One of two or more alternative possible crystal structures for a single chemical compound; for example, the minerals quartz and cristobalite are polymorphs of silica (SiO2).

silicate mineral

a mineral that contains a combination of silicon, oxygen, and one or more metals

silicon-oxygen tetrahedron

the basic unit of the structure of silicate minerals; a silicon ion chemically bonded to and surrounded by four oxygen ions

specific gravity

the density of a substance relative to the density of water

streak

a marking of a different color or texture from the background

symmetry

having the same shape, size, and position on both sides of a dividing line

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set