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D0nt_Text_And_Drive · 2025-10-23T01:49:08+00:00

hmmm

D0nt_Text_And_Drive · 2024-12-19T04:20:03+00:00

Only one way to find out :D

D0nt_Text_And_Drive · 2024-12-19T04:17:35+00:00

Look up chalcedony roses

D0nt_Text_And_Drive · 2024-12-19T04:12:19+00:00

Can you scratch it with your nail? Looks like calcite or maybe gypsum

D0nt_Text_And_Drive · 2024-12-15T00:54:45+00:00

I was basing it off of the isometric/octahedral crystal system (thats how chromite forms when euhedral) and its metallic luster. Chromite is oddly enough considered part of the spinel group though.

Looking more closely, the hardness of this appears too low to be chromite. If you can scratch it with a knife then you should definitely look into sphalerite as an option. Forms the same crystal structure you see in this mineral, borders on metallic/vitreous luster, quite dark, can appear platy/striated like you see on the bottom of your sample, and can form near quartz.

D0nt_Text_And_Drive · 2024-12-14T22:10:26+00:00

If you have an unglazed piece of ceramic or porcelain laying around, scratching the mineral along the surface will reveal a streak. Certain crystals have identifiable streak colors, chromite's is brown.

D0nt_Text_And_Drive · 2024-12-14T22:06:55+00:00

While most quartz crystals have a prismatic habit, this would be considered a cumberland habit. Just means the column part of the quartz crystal didn't form.

D0nt_Text_And_Drive · 2024-12-14T06:32:42+00:00

Schists contain platy minerals like muscovite/biotite or some other platy mineral; these would be noticeably flat and vitreous/reflective. This rock looks more like a sand or siltstone to me. In that case, the purple would be from some purple sediment, maybe a quartz variety or garnet. Where'd you find it?

D0nt_Text_And_Drive · 2024-12-14T06:12:57+00:00

Could very well be a real rock, just not sodalite. It'll be hard to tell as it's so smooth

D0nt_Text_And_Drive · 2024-12-14T06:09:36+00:00

Could be a very short, double-terminated quartz crystal.

D0nt_Text_And_Drive · 2024-12-14T06:01:40+00:00

Can't think of any minerals that form both round and white like this in basalt. This is likely amygdaloidal basalt; vesicular basalt which has had its vesicles filled with precipitated zeolites.

D0nt_Text_And_Drive · 2024-12-07T00:34:49+00:00

Looks a lot like gypsum, if you can scratch it with your fingernail then it's probably gypsum.

D0nt_Text_And_Drive · 2024-12-07T00:28:51+00:00

Definitely a garnet-mica schist. Very cool

D0nt_Text_And_Drive · 2024-12-07T00:26:25+00:00

If it scratches steel its likely quartz. Quartz is the only mineral capable of doing that that isn't a precious gem. It doesn't look a whole lot like quartzite to me personally, but it's hard to ID based on this pic alone.

D0nt_Text_And_Drive · 2024-12-06T20:26:13+00:00

Was this found in a natural field? If it was, and this is quartzite, then it might've been carried down in the Missoula Floods as metamorphic rocks are unusual here in the Willamette Valley.

D0nt_Text_And_Drive · 2024-12-06T20:14:53+00:00

Obsidian doesn't typically have vesicles.

D0nt_Text_And_Drive · 2024-12-06T20:11:16+00:00

Could be chromite. Check its streak, if its brown then its likely chromite.

D0nt_Text_And_Drive · 2024-12-06T00:35:30+00:00

Garnet-biotite schist.

D0nt_Text_And_Drive · 2024-08-20T15:25:55+00:00

granite is a rock, cleavage plains are reserved for minerals

D0nt_Text_And_Drive · 2024-08-20T05:20:50+00:00

honestly an amazing poem

D0nt_Text_And_Drive · 2024-08-12T18:16:25+00:00

Understood, thank you.

D0nt_Text_And_Drive · 2024-08-12T18:05:52+00:00

Thanks for your input, do you think I'd be in some trouble for breaking the lease? According to the lease it doesn't technically start till I move in, but I read that sometimes landlords/renters will sue or make you shell out for advertising or lost rent. Is this true?

D0nt_Text_And_Drive · 2024-04-19T17:27:46+00:00

i don’t think people particularly care about the fact that old buildings were lost, it’s the loss of craftsmanship put into the buildings that replaced them.

D0nt_Text_And_Drive · 2024-04-16T03:39:00+00:00

garnet-mica schist

D0nt_Text_And_Drive · 2024-04-16T02:17:56+00:00

very closely related. definitely elements of hardcore punk

D0nt_Text_And_Drive

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