mod 2 Flashcards
what a mineral
made of one or more elemts, inorganic, crystaline solid
how do minerals form
crystalizion, its the cooling of molten rock or precipertation from a fluid
carbonates
carbonate ion (CO 32-) is the building block of carbonates
Oxides
oxygen is bonded to atoms or cations of other elements
Sulfides
basic building block is the
sulfide anion (S2-)
- bonded to metallic
cations
Sulfates
include sulfate ion (SO 42-) bonded with cationic metals
- examples: Ca2+, Ba2+, Mg2+, Fe2+and others
Mineral Hydration
some minerals
incorporate water
molecules in their crystal
structure (“hydrated”)
Halides
halide anions bonded to metallic
cations
- anions: F-, Cl-, Br-, I-
- cations: Na+, K+, Ca2+, Mg2+
Native Elements
just the elemt forming hella rare
silicates
basic building block of all
silicate minerals:
silicon-oxygen tetrahedron
(SiO 4-4)
3 silicate formations
frame work = most silacate, very storng
chain= strong in only one direction
sheet=weakist and make rocks that cleave like sheets
physical properties of minerals (8)
colour
luster= shinynis
cleavage/ fracture
texture
compostion
srreake
density
crystal form
(nich magnitism and acid reaction)
felsic
light in colour, like feldspar quartz granit
mafic
dark colour
mohs scale of hardness
1 to 10