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Improving Mindat.orgTr-State photos that don't belong
19th Aug 2018 05:25 UTCDana Slaughter ๐ Expert
https://www.mindat.org/photo-90525.html
Almost certainly Berry Materials quarry, North Vernon, Jennings Co. IN
https://www.mindat.org/photo-90525.html
Ditto, though less certain
https://www.mindat.org/photo-460922.html
Sweetwater mine, Ellington, Reynolds Co., MO
https://www.mindat.org/photo-4564.html
Likely Shangbao mine, Hunan, China
https://www.mindat.org/photo-4117.html
Never seen anything like it from Tri-State--looks like CO or Peru
https://www.mindat.org/photo-66627.html
Viburnum Trend...see micro dolomite xls
https://www.mindat.org/photo-354800.html
Viburnum Trend, MO---see dolomite xls
https://www.mindat.org/photo-610074.html
Likely Elmwood district, TN
https://www.mindat.org/photo-713819.html
Brushy Creek mine, Greeley, MO
There are a couple others that I consider doubtful but am not confident
due to photo quality, personal wavering, etc.
Thanks!
19th Aug 2018 06:51 UTCBob Harman
I basically agree. After review:
the first 2 examples 90525 are identical, one and the same specimen, from Berry Materials in North Vernon, In
460922 agree
4564 could well be from Missouri, n.o.s., several localities. China??????
66627 agree
354800 octahedral galena associated with micro dolomites and micro chalcopyrite. West Fork Mine, Viburnum Trend District, Reynolds Co, Missouri
610074 ?
713819 agree
CHEERS............BOB
19th Aug 2018 14:42 UTCKevin Conroy Manager
4117 looks like some that I've seen from Park City District, Utah.
19th Aug 2018 21:26 UTCDana Slaughter ๐ Expert
4654 is a dead ringer for the Shangbao dolomite associated with tiny quartz crystals as mentioned in the description. These were available wholesale through Top Gem Minerals, Inc. and Collectors Edge Wholesale at Tucson several years ago. I had some of these and I would bet a house payment that it is from Shangbao---the backside is likely covered with tiny quartz crystals.
20th Aug 2018 00:20 UTCKelly Nash ๐ Expert
20th Aug 2018 00:46 UTCKeith Compton ๐ Manager
20th Aug 2018 02:11 UTCDana Slaughter ๐ Expert
The coloration and morphology of the dolomite (and size of xls) along with the associated quartz make me very suspicious of a Tri-State origin. I've had virtually identical specimens from Shangbao and was reluctant to include the specimen because of my respect for the poster---a very educated individual. He might be able to shed light as to when the specimen was added to his collection---if pre-2000 then Shangbao could likely be ruled out.
Kevin chimed in agreement and I certainly respect his Tri-State expertise as well as yours.
20th Aug 2018 03:12 UTCKelly Nash ๐ Expert
20th Aug 2018 03:12 UTCAlfredo Petrov Manager
I have a bit of an off-topic comment to make here, but I wish every mineral photo on Mindat would include a daughter photo of the matrix or base. That would often make it much easier to tell whether the provenance is correct. (And I'm a hypocrite because, no, I haven't done this either.)
20th Aug 2018 04:01 UTCKevin Conroy Manager
20th Aug 2018 04:14 UTCPaul Brandes ๐ Manager
-------------------------------------------------------
> I have a bit of an off-topic comment to make here,
> but I wish every mineral photo on Mindat would
> include a daughter photo of the matrix or base.
> That would often make it much easier to tell
> whether the provenance is correct. (And I'm a
> hypocrite because, no, I haven't done this
> either.)
Preach on, brother! :-)
And yes, I'm guilty of not doing this either...
20th Aug 2018 05:43 UTCKeith Compton ๐ Manager
https://www.mindat.org/photo-441281.html
20th Aug 2018 14:29 UTCKevin Conroy Manager
22nd Aug 2018 03:25 UTCJohn Betts
-------------------------------------------------------
> I'd be very surprised if John got this so wrong
> with (4564) - given that he says it is from his
> personal collection. Shoudl be able to check the
> base of the specimen - but that now depends on who
> now holds the specimen.
It was acquired from Robert Bates, who who had access and collected extensively at the Mid-Continent Mine, then used that material to trade with others worldwide. But it is possible that labels got switched...
22nd Aug 2018 04:05 UTCDana Slaughter ๐ Expert
https://www.mindat.org/photo-157530.html
https://www.mindat.org/photo-694235.html
https://www.mindat.org/photo-769899.html
I'm very confident that the Betts dolomite is Chinese and almost certainly from the Shangbao mine---at the very least it should be removed from the district. No action has been taken on these photos so I thought to refresh.
22nd Aug 2018 13:21 UTCKevin Conroy Manager
2nd Sep 2018 16:24 UTCDana Slaughter ๐ Expert
10th Sep 2018 05:36 UTCDana Slaughter ๐ Expert
11th Oct 2018 18:13 UTCKevin Conroy Manager
The white rhombic dolomite crystals are the indicator that this is from the Viburnum Trend in Missouri.
17th Oct 2018 15:33 UTCDana Slaughter ๐ Expert
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are ยฉ OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 25, 2024 17:26:48