plumberinaz
starting to spend too much on rocks
Member since June 2013
Posts: 186
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Post by plumberinaz on Jun 21, 2013 19:36:54 GMT -5
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plumberinaz
starting to spend too much on rocks
Member since June 2013
Posts: 186
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Post by plumberinaz on Jun 21, 2013 19:39:02 GMT -5
That last picture shows the flakes on the rock they are very thin slivers or flake not really sure..
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,159
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Post by jamesp on Jun 21, 2013 19:42:22 GMT -5
The first couple look like calcite The last ones look like milky quartz w/mica
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plumberinaz
starting to spend too much on rocks
Member since June 2013
Posts: 186
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Post by plumberinaz on Jun 21, 2013 19:48:08 GMT -5
Yes i figured on the last one it was quartz, But it has flakes on it as well and they just fall off onto your hand when u handle the rock to much. Either way they sit as display pieces on my toilet tank!
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Jun 21, 2013 22:09:37 GMT -5
quartz/mica seems like a good call for #2.
For the first one(s) put vinegar or pool acid on them, if it bubbles then you have calcite.
Other newbie tests to do are:
Streak - scratch it on the back of a porcelain dish/plate and see the color of the streak
Scratch it with a regular steel knife. Report results. Did it scratch?
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plumberinaz
starting to spend too much on rocks
Member since June 2013
Posts: 186
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Post by plumberinaz on Jun 21, 2013 22:20:17 GMT -5
I scratched it with a steel knife and it left lines in it..
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Jun 21, 2013 22:26:11 GMT -5
scrathed material = softer than steal or Mohs < 5'ish - points to the calcite Jim mentioned. With calcite minerals the acid test seems pretty diagnostic.
Of course, I accept I am wrong if someone with more experience says I am.
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plumberinaz
starting to spend too much on rocks
Member since June 2013
Posts: 186
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Post by plumberinaz on Jun 21, 2013 22:27:08 GMT -5
Will it hurt the rock it i put the acid on it?
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plumberinaz
starting to spend too much on rocks
Member since June 2013
Posts: 186
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Post by plumberinaz on Jun 21, 2013 23:35:31 GMT -5
I submerged the rock in acid and nothing happened, No bubbles.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Jun 22, 2013 10:59:49 GMT -5
The first photos look like pieces of limb cast petrified wood.....
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Jun 22, 2013 12:59:50 GMT -5
Don't submerge the stones. Put a drop of the acid on it. If it bubbles wash it away, if it doesn't bubble wash it away. No time for damage.
If Fossilman is right about limb cast (ALWAYS expect him to know way more than me) then acid will do nothing.
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