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Identity Helphaving a tough time with this crystal
15th Nov 2019 05:31 UTCBrian Fussell
15th Nov 2019 05:40 UTCcascaillou
Possibly spinel group mineral such as chromite?
While the crystal is too small to be scratched, you might still try and scratch material of known hardness with the crystal (try against copper plate, glass plate, polished quartz).
And actually, the fact that it does leave a streak on porcelain (which may range from 6 to 7.5 Mohs) implies that your mineral is of equal or lower hardness.
Concerning streak color it is orangish-brown in my eyes.
15th Nov 2019 07:29 UTCFrank K. Mazdab 🌟 Manager
15th Nov 2019 06:45 UTCAlfredo Petrov Manager
15th Nov 2019 06:50 UTCThomas Lühr Expert
15th Nov 2019 08:04 UTCUwe Kolitsch Manager
15th Nov 2019 12:34 UTCPaul Brandes 🌟 Manager
Goethite pseudos are known to have come from the Stettin area.
16th Nov 2019 00:35 UTCBrian Fussell
17th Nov 2019 05:48 UTCD Mike Reinke
17th Nov 2019 13:14 UTCHarold Moritz 🌟 Expert
17th Nov 2019 22:39 UTCBrian Fussell
17th Nov 2019 22:46 UTCBrian Fussell
Yes Mike a microscope is on my list of things to get...soon I hope.
It does have a reflective surface, I had a tough time getting the right lighting angles to cut down on the reflections, kinda like when I shoot polished stones.
17th Nov 2019 17:31 UTCDonald B Peck Expert
{Hi Mike, hope the world is treating you well!)
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Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: May 13, 2024 22:52:21