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  1. #1
    us
    Apr 2008
    1,071
    176 times

    fluorite , quartz but what is this black crystals, tabular yellowish and shiny gold?

    Hi, I think I have identified a quartz and a fluorite specimen. But, what is this other rock? It has black crystals and looks like it has been spray painted in gold.A thin layer of that gold like stuff covers a good portion of the rock. Iron pyrite I assume? The rock seems pretty heavy. What would those black shiny crystals be? And the thing tabular ones...

    Thanks for any thoughts.
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    Don't believe everything you read on the internet - Abraham Lincoln


  2. #2
    us
    Feb 2008
    SE Missouri
    garage sale oldie
    3,071
    860 times
    TH'ing, fishing, reading, cooking
    I found a black crystal similar to yours, though mine were a lot smaller. Couldn't ID it. Nice smoky quartz I wanna go where you went!
    dancing in the fire!

  3. #3
    us
    B. Martin

    Feb 2012
    East Bend, North Carolina
    273
    53 times
    All Types Of Treasure Hunting
    Nice minerals! I see fluorite which has cubic crystals. I see quartz w/ impurities (smoky quartz). Last, one looks like some kind of matrix of hematite, pyrite, and quartz maybe. The tabular/cubic crystals is iron sulfide (pyrite), some can be elongated. The black/steel gray coating is iron oxide (hematite). That quartz formed on the surface by contact metamorphism, maybe. I'm not real sure what it is by the pictures. Interesting, thanks for sharing!

  4. #4
    se
    Sep 2006
    Sweden
    White's V3, Minelab Explorer II & XP Deus.
    6,461
    2075 times
    Prospecting
    The black stuff sure looks interesting, can you do a streak test?
    As a first impression I'm thinking sphalerite or a related sulphide.
    Geologists are gneiss, tuff, and a little wacke.

  5. #5
    us
    Apr 2008
    1,071
    176 times
    Thank you! I need to pick up a tile and i will do a streak test. It is an interesting rock. Thanks again all.
    Don't believe everything you read on the internet - Abraham Lincoln


  6. #6
    us
    John

    Feb 2013
    Southaven, Mississippi
    Lone Star Bounty Hunter IV
    83
    20 times
    All Types Of Treasure Hunting
    I agree with Eu Citizen,the black crystals look like sphalerite (zinc sulphide) sometimes associated with galena (lead sulphide)

 

 

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