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Identity HelpGarnet?

21st Nov 2019 20:31 UTCRobert Darabos

Crystal purchased at a local market, Antigua, Guatemala.

It supposedly comes from Guatemala, guessing around Tecpan or Sierra de las Minas.

Pretty hard material, not scratch with a steel knife. Much too hard for Apatite.

Is this (most likely) garnet?

21st Nov 2019 20:32 UTCRobert Darabos

another image

21st Nov 2019 21:14 UTCNick Gilly

It does look like the crystals may be dodecahedral. If so, then I suspect it's grossular with that yellowish-green colour.

21st Nov 2019 23:22 UTCDavid Carter 🌟 Expert

Looks like Grossular Garnet along with darker Vesuvianite?

22nd Nov 2019 00:29 UTCRobert Darabos

how could i test the difference between Vesuvianite and Grossular? They are really close in hardness, right?

This stuff is pretty crazy and randomly found someone selling it. Once in a while in the markets people have some new minerals that come from the Sierra de las Minas area. Some of the other material, the more pink-green stuff, looks exactly like Jeffrey Mine Vesuvianite. That I know of, Vesuvianite is not reported from the area, though.

22nd Nov 2019 01:10 UTCKyle Beucke 🌟

There are reportedly copper skarns in Concepcion las Minas. I wonder if this could be associated?

Kyle

22nd Nov 2019 01:09 UTCDavid Carter 🌟 Expert

Although it was purchased at a local market in Antigua, Guatemala, could it not originate from neighbouring Mexico where Grossular Garnet is commonly found (along with Vesuvianite)?

22nd Nov 2019 01:31 UTCRobert Darabos

definitely could. they said it was from Guatemala, but of course if they knew saying that would get a sale they probably would. They actually had Vera Cruz Amethyst as well, so good chance.

where in Mexico is material like this found?

22nd Nov 2019 01:43 UTCDavid Carter 🌟 Expert

Sierra de Cruces, Sierra Mojada Municipality, Coahuila, Mexico

22nd Nov 2019 01:56 UTCRobert Darabos

alright, that is the place i thought.

i am going to go back to the market and get a couple pieces with diffeent colors and with a matrix. should help determine if it is Coahuila or not.

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