esteban
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Post by esteban on Jun 13, 2021 10:53:34 GMT -5
Hardness-it scratches steel Reactivtiy-minimal. Density-heavy for its volume.
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esteban
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Post by esteban on Jun 13, 2021 11:01:43 GMT -5
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Post by manofglass on Jun 13, 2021 11:07:23 GMT -5
Welcome from Michigan
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esteban
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Post by esteban on Jun 13, 2021 11:11:30 GMT -5
Thank you for the welcome.
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Post by rockpickerforever on Jun 13, 2021 12:02:55 GMT -5
esteban, with only the photo to look at, my guess is mica schist. Have a lot of it in SoCal. Where is the supposed pegmatite located? Welcome to the forum!
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esteban
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Post by esteban on Jun 13, 2021 12:29:58 GMT -5
esteban , with only the photo to look at, my guess is mica schist. Have a lot of it in SoCal. Where is the supposed pegmatite located? Welcome to the forum! This is heavy-specific gravity is 3,75. Its also not brittle(trust me I tried chipping this with quartz) So absolutely not mica schist(and I know full well what that is, found garnets in it). The other forum suggest staurolite, and Im inclined to believe them.
as for where the pegmatite is located, cant and wont disclose that. Sorry
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Post by rockpickerforever on Jun 13, 2021 12:35:42 GMT -5
State? Wasn't asking for coordinates. Location is helpful for nailing down ID.
Try Googling staurolite, you will see this is not even a remote possibility. Were you thinking of something else?
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esteban
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Post by esteban on Jun 13, 2021 12:41:32 GMT -5
I asked specifically that. And those are the more sought and sold specimens. There are untwinned ones too.
State? Wasn't asking for coordinates. Location is helpful for nailing down ID. Try Googling staurolite, you will see this is not even a remote possibility. Were you thinking of something
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islander
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Post by islander on Jun 13, 2021 15:38:58 GMT -5
I asked specifically that. And those are the more sought and sold specimens. There are untwinned ones too.
State? Wasn't asking for coordinates. Location is helpful for nailing down ID. Try Googling staurolite, you will see this is not even a remote possibility. Were you thinking of something I don't think that's staurolite - it doesn't look like a monoclinic crystal.
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Post by rmf on Jun 14, 2021 8:58:23 GMT -5
it looks metamorphic (contact metamorphic) if you are near pegmatites maybe. possibly Staurolite crystals
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islander
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Post by islander on Jun 14, 2021 15:14:44 GMT -5
it looks metamorphic (contact metamorphic) if you are near pegmatites maybe. possibly Staurolite crystals The problem with that is that staurolite is a high grade metamorphic mineral formed at great depth (around 40km) and pressure by regional metamorphism, whereas pegmatite is a granitic rock that's been intruded into the country rock (batholith, laccolith etc.) and cooled slowly enough for large crystals to form - usually in the contact aureole.
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quartzilla
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Post by quartzilla on Jun 14, 2021 22:41:27 GMT -5
I would guess staurolite or andalusite.
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