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
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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

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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

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4
Q

how do you identify sulfur?

A

its such a distinct bright yellow blob with anhedral habit and literally no other properties

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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

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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)

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