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Identity HelpIdentification Help (Native Bismuth)
18th Jul 2012 19:41 UTCJoe Mork
18th Jul 2012 20:30 UTCRock Currier Expert
18th Jul 2012 20:33 UTCPeter Haas
20th Jul 2012 00:09 UTCJoe Mork
Color: Metallic, almost a silver-white. Under the view of a microscope 2 samples contained very small vugs or openings. Within those openings the walls were an iridescent/metallic color to that color of the Hopper Crystals (rainbow). Also as with the picture, 1 sample contained a blue hue while looking at it, however through a microscope that blue hue is accompanied with other colors resembling those colors of the Hopper Crystals (a rainbow tarnish if you will) as well.
Streak: Silver-white
Hardness: Between a 2 and 2.5
Cleavage: Perfect in one direction
Fracture: Uneven and jagged
Specific Gravity: Between a 9.7 and 9.8
Crystal System: Hexagonal, some in the small vugs or openings are almost branching
20th Jul 2012 01:49 UTCReiner Mielke Expert
20th Jul 2012 01:52 UTCPeter Haas
Thus, what you have appears to be bismuth. To be more conclusive, I need to see a picture, though.
EDIT:
A lamellar structure, if it is not particularly tight, also explains why you see "vugs" with crystalline structures in them. Thus, this observation does not necessarily mean that it is man-made.
20th Jul 2012 02:53 UTCJoe Mork
3 pictures are coming in 3 different attachments which includes this one because of their size
20th Jul 2012 02:56 UTCJoe Mork
20th Jul 2012 03:02 UTCJoe Mork
If you need better I will try again in the morning. I wish I could show you the vugs, but my microscope isn't capable of capturing images.
20th Jul 2012 11:53 UTCPavel Kartashov Manager
20th Jul 2012 15:05 UTCLefteris Rantos Expert
Lefteris.
20th Jul 2012 17:09 UTCUwe Kolitsch Manager
20th Jul 2012 19:10 UTCEvan Johnson
EMJ
20th Jul 2012 19:59 UTCDonald Slater
20th Jul 2012 20:13 UTCJoe Mork
20th Jul 2012 21:08 UTCEvan Johnson
21st Jul 2012 00:39 UTCReiner Mielke Expert
21st Jul 2012 02:20 UTCAlfredo Petrov Manager
22nd Jul 2012 18:42 UTCRob Woodside 🌟 Manager
22nd Jul 2012 18:59 UTCJoe Mork
22nd Jul 2012 19:14 UTCryan christensen
22nd Jul 2012 20:24 UTCRowan Lytle
22nd Jul 2012 22:04 UTCGeorge Creighton
Regards george
22nd Jul 2012 22:10 UTCReiner Mielke Expert
23rd Jul 2012 01:41 UTCJohn Lichtenberger
http://i3.photobucket.com/albums/y62/auplater/Bismuth1.jpg
auplater
23rd Jul 2012 02:38 UTCJoe Mork
23rd Jul 2012 04:48 UTCTim Jokela Jr
Genuine natural native bismuth, unlabelled, unboxed, in a jar with agates and amber???
Add the fact that it looks NOTHING like either native or manmade bismuth... and I collected semi-metals for a while, have seen lots...
23rd Jul 2012 07:50 UTCPhilip Perkins
& i'd say Bismuth has a light brassy color like is shown with John's specimen.
Yes Bismuth does crystallize, i once saw a specimen in combo with Quartz in the Queensland Mines Dept collection in Brisbane, many years ago.
23rd Jul 2012 13:52 UTCEvan Johnson
23rd Jul 2012 14:52 UTCJoe Mork
23rd Jul 2012 17:40 UTCReiner Mielke Expert
23rd Jul 2012 19:41 UTCEvan Johnson
26th Jul 2012 13:51 UTCSimone Citon Expert
Seriously, Joe, to me no man-made product of native elements (another morphology, generally more cleavaged), no crystallized natural Antimony or Bismuth (really in euhedral crystals too much rare), I see pentagonododecahedral crystals pale gray color with bluish iridescence on the surfaces and I'm thinking to the moroccoan Skutterudite. See you that
http://www.mindat.org/photo-41615.html
Before you come back on your test, there may be a link with moroccoan minerals? Maybe at the flea market there were other pieces, as Baryte, Vanadinite, Azurite / Malachite, Chalcedony, other Morocco material?
27th Jul 2012 07:14 UTCAnonymous User
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