Minerals. What are minerals? Naturally occurring Inorganic Solid Specific chemical compositions ...
-
Upload
jemimah-moody -
Category
Documents
-
view
219 -
download
1
Transcript of Minerals. What are minerals? Naturally occurring Inorganic Solid Specific chemical compositions ...
Minerals
What are minerals? Naturally occurring Inorganic Solid Specific chemical compositions
Made up of specific compounds or elements
Definite crystalline structure Form in open spaces and crystals grow to
fill that space
Mineral Identification Color Luster Streak Hardness Breakage
Mineral Identification Color
Caused by trace elements or compounds within a mineral
Luster The way a mineral reflects light
Metallic minerals- reflects light Non-metallic- do not shine
Glassy, greasy, pearly, dull or earthy
Mineral Identification Hardness
Measures how easily a mineral can be scratched Moh’s Scale (1-10)
Finger nail, glass, streak plate
Streak The color of a mineral when it is broken
up and powdered.
Mineral Identification Breakage
Minerals break along planes where atomic bonding is weak. Cleavage- a mineral splits evenly along
planes Fracture- minerals that break with
rough/jagged edges.