non silicates - native elements Flashcards
1
Q
which native elements do we have samples for and thus you may need to identify?
A
- sulfur
- copper
- graphite
- antimony
2
Q
identify the follwing native element: habit: - anhedral massive so no specific habit colour: - silvery - leaves a light grey streak lustre: - metallic hardness: - 1/2 scratched by finger nail cleavage: - apparently one direction but not really visible
A
graphite
3
Q
how can you identify the graphite specimen?
A
it has an a shape, literally comes off on your fingers, and the streak feels so nice
4
Q
how do you identify sulfur?
A
its such a distinct bright yellow blob with anhedral habit and literally no other properties
5
Q
identify the following native element: habit: - anhedral massive nothing distinct colour: - specs of pale white in a bigger green background streak: pale grey lustre: - earth/dull hardness: -3/4 (steel nail) cleavage: -no cleavage
A
copper
6
Q
what properties does copper have that allows it to be separated from other green minerals?
A
it literally has a strong copper smell, and leaves a pale grey streak (can distinguish from other green minerals)