Jump to content
Nugget Shooter Forums

New, looking for specimen id

Recommended Posts

Hardness?  Specific Gravity?

Without the above my first guess would be: large sample - Chalcedony; small sample - weathered, clear, glass.

Link to comment
Share on other sites

If you have a piece of quartz with a sharp edge, scrape the quartz against the samples.  If the quartz "gouges" or leaves a mark on the samples that does not rub off, then the samples are most likely clear, weathered glass.

Link to comment
Share on other sites

I'm pretty sure that you used a piece of "Calcite" per above photos to do the test.  Calcite is very soft, hardness of 3 on the Mohs scale, and will not scratch most minerals.  You know know that the samples are harder than 3 on the Moh's scale, that is useful.

Mineral Hardness  here is some info on mineral hardness and the "Mohs Scale".  If you have a "pointy" six sided piece of quartz (quartz crystal) that would work to test the samples of interest.

Edited by 4meter
  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...