Any ideas?, Rock I found any input? |
Colorado Prospector - Gem and mineral prospecting and mining forums > Prospecting, Mineral Collecting and Treasure Hunting Forums > Gem and Mineral Specimen Finds or Processes  |
Any ideas?, Rock I found any input? |
 Jan 17 2015, 01:53 AM
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#1
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Diggin' In!  Group: Members Posts: 4 Joined: 23-February 11 Member No.: 11,806  |
I found this rock while landscaping my yard while moving some piles of rock no idea what it is ....
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Jan 17 2015, 05:56 AM
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#2
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 Moderator Group: Members Posts: 4,459 Joined: 25-August 09 From: way on up thar Member No.: 6,983 |
Hi bigfoot and welcome!
 At first glance it looks like slag, do you live near railroad tracks? Really hard to narrow it down without more specifics. Is it relatively heavy or light for its size? Is it magnetic? -------------------- /l ,[____], l---L-OlllllllO- ()_) ()_)--o-)_) BLACK SANDS MATTER! Very Happy CP Lifetime Member CP CORE TEAM Referral Code CE213 |
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Jan 17 2015, 03:39 PM
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#3
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Diggin' In! Group: Members Posts: 4 Joined: 23-February 11 Member No.: 11,806 |
weighs about 40 pounds its heavy and nope don't live near tracks found it my yard in a pile of rock it is NOT magnetic in any area they slide right off of it and my cheap metal detector says its a high grade metal gold or silver the out side is melted and the inside is almost crystalline you can see how the outer layer is melted and the closer you get to the center it gets more crystal like it is metallaic on the outside but if you get it wet its really weird looking the surface looks like a rainbow from what looks like heated metals one part looks almost like its gold not sure have never seen anything like it and I can tell ya its not lead too hard
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Jan 17 2015, 03:55 PM
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#4
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Moderator Group: Members Posts: 4,459 Joined: 25-August 09 From: way on up thar Member No.: 6,983 |
My first guess might be some form of Hematite... possibly some Rainbow Hematite inclusions based on your description.
-------------------- /l ,[____], l---L-OlllllllO- ()_) ()_)--o-)_) BLACK SANDS MATTER! Very Happy CP Lifetime Member CP CORE TEAM Referral Code CE213 |
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Jan 17 2015, 04:12 PM
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#5
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 Master Mucker! Group: Admin Posts: 7,206 Joined: 7-October 03 From: Colorado Member No.: 4 |
 Welcome to the forums bigfoot6696! From what you have described it sounds like it could be Hematite to me also. If it is, it would leave a red for the streak test. It would also be a 5-6 on the hardness test. Beautiful specimen, thanks for sharing pics with us! I hope this info helps some. Denise -------------------- Education is the key to the future,
and participation opens the door to opportunity. Discover your prospecting independence & success! ColoradoProspector.com Owner/Webmaster Core team member ♥  |
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Jan 17 2015, 05:10 PM
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#6
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Diggin' In! Group: Members Posts: 4 Joined: 23-February 11 Member No.: 11,806 |
QUOTE (Mrs.CP @ Jan 17 2015, 03:12 PM)  Welcome to the forums bigfoot6696! From what you have described it sounds like it could be Hematite to me also. If it is, it would leave a red for the streak test. It would also be a 5-6 on the hardness test. Beautiful specimen, thanks for sharing pics with us! I hope this info helps some. Denise since metal detector says its in the precious metals category I want to melt part of it to see what metal is in it :P |
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Jan 17 2015, 05:16 PM
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#7
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Diggin' In! Group: Members Posts: 4 Joined: 23-February 11 Member No.: 11,806 |
just looked at hundreds of images of hematite nothing resembles it and after heating a piece with a map gas torch its not even slightly magnetic
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Jan 17 2015, 07:31 PM
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#8
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Moderator Group: Members Posts: 4,459 Joined: 25-August 09 From: way on up thar Member No.: 6,983 |
(not all Hematite is magnetic)
I'm not sure that torching it will get you any closer to an answer.... it does sound fun though.  A streak test and/or hardness test as suggested will be far more revealing and get you much closer to an answer. I would also recommend a simple specific gravity test. Fill in those blanks and we can probably nail it. 
-------------------- /l ,[____], l---L-OlllllllO- ()_) ()_)--o-)_) BLACK SANDS MATTER! Very Happy CP Lifetime Member CP CORE TEAM Referral Code CE213 |
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Jan 17 2015, 07:44 PM
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#9
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 Master Mucker! Group: Members Posts: 1,282 Joined: 13-January 14 From: Lakewood, Colorado Member No.: 116,305 |
I read on minerals.com that heating magnatite will increase it's magnetic field.
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Jan 17 2015, 08:34 PM
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#10
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Moderator Group: Members Posts: 4,459 Joined: 25-August 09 From: way on up thar Member No.: 6,983 |
ah, interesting
 the plot thickens
-------------------- /l ,[____], l---L-OlllllllO- ()_) ()_)--o-)_) BLACK SANDS MATTER! Very Happy CP Lifetime Member CP CORE TEAM Referral Code CE213 |
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Jan 17 2015, 08:40 PM
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#11
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Master Mucker! Group: Members Posts: 1,282 Joined: 13-January 14 From: Lakewood, Colorado Member No.: 116,305 |
Dum duhhh duhhhhh.
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Feb 3 2015, 12:43 AM
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#12
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 Rock Bar! Group: Members Posts: 730 Joined: 6-July 14 From: Grant, CO Member No.: 117,890 |
Hijacked post - Good title - I found this rock in my backyard a few months ago, just came across it again.. is it just quartz?
-------------------- - You Rock! (Literally)
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Feb 3 2015, 09:53 AM
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#13
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Moderator Group: Members Posts: 4,459 Joined: 25-August 09 From: way on up thar Member No.: 6,983 |
I looks like Quartz fused to Feldspar.
-------------------- /l ,[____], l---L-OlllllllO- ()_) ()_)--o-)_) BLACK SANDS MATTER! Very Happy CP Lifetime Member CP CORE TEAM Referral Code CE213 |
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