Geology Final Part 1
Silicate minerals are subdivided into six groups based on the way silica tetrahedra are?
arranged and bonded
Which of the following is a mineral?
ice, which is water in the solid state
When hematite is scraped its called a _______
streak
Minerals are all naturally occurring solid substances with a definable chemical composition
they must also posses a crystalline structure
The image below shoes a mineral specimen of mica how many shades of cleavage does it have?
1
Diamonds are found in what type of rock?
Kimberlite
What is solid state diffusion?
Movement of atoms through a solid to form a new mineral
Whats a common gemstone that results from biomineralization?
Pearls
When a solution becomes over saturated new solid particles are said to do what?
Precipitate
Most abundant rock forming mineral?
Silicate
A larger number can scratch a smaller number on the mohs hardness scale
True
Diamonds and other sorts of gems do not __________
basyt
In silicate minerals, the sio4 tetrahedron can be linked together
by sharing oxygen atoms
Crystals that exhibit well formed faces are referred to as
euhedral
It is ________ that diamonds are seven times as hard as quartz
false