minerals Flashcards
what are minerals defined by
they are naturally occuring
inorganic material not coming from a livgin thing
either element or compound
have a crystalline structure
what is a crytalline form
solids in which the atoms or molecules are formed in a fixed position and form a pttaern
what is a crystal
a solid with a crystalline form large enough that can be seen with the naked eye, and its atoms are formed in an orderly and repeasting pattern
which crystals have smooth surfaces and regualr shapes
crystals developed in tight spaces
which crystals do not have smooth surfaces and have irregular shapes
crystals formed in open spaces
how do crystals form
when minerals are dissolved in water and the cooling of magma
what are the most common rock-forming minerals
the siloicates
what are the silicates
compounds which do contain the elements silicon, oxygen, and 1 or or 2 other elements
how are minerals classfied
color
luster
streak
hardness
what is luster
the way light reflects off the surface of a mineral
two types of luster
non-metallic(glassy, earthy, silky, or pearly) and metallic(shiny and opaque)
what si used to determine the hardness of amineral
moh’s scale
