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GeneralHomestake Mine Mineral Specimens
3rd Dec 2011 14:26 UTCBart Cannon
I've also worked for several years for the Homestake Mine at Deadwood analyzing their ores before they closed down some years back..
The mine produced for 120 years. Probably the most important gold mine in the U.S.
* Has anyone ever seen an appealing mineral specimen from the Homestake area ?.
I understand that there were a few placer nuggets if minor mert, but every sample I ever analyzed was non-descript arsenopyrite and other sulfides. Never with viisble gold.
It is of interest that George Hearst killed plenty of people in his quest to monopolize claims in the Comstock, Part City, Butte and Deadwood.
His son was William Randolph Hearst of publishing fame. I think his daughter was Patty Hearst kidnaped by the Symbionese Liberatrion Army.
History. So interesting. News blurbs, then hardcopy accounts.
3rd Dec 2011 15:28 UTCRobert Farrar
A good many specimens were saved from the mill over the years. These were found in what miners called 'watercourse' deposits - areas where a quartz vein opened up into crystal lined cavities. Miners were prohibited from collecting, so the specimens saved must have been brought up by safety engineers, etc. Most common were small, nearly water clear quartz groups, sometimes associated with 2-5mm pyrites, slightly large calcites, and tiny dolomites. Occasionally there were 3-10mm sphalerites, a few occurrences had amethyst instead of the clear quartz. The real prize, of which only a handful were recovered, were sea green strontianite balls up to 10cm.
There are a few good private collections, but the best public collection is appropriately at the SD School of Mines Museum of Geology.
Bob
3rd Dec 2011 16:21 UTCPaul Brandes 🌟 Manager
By chance, were you at the Homestake in 1997 or 2002? Reason why I ask is that I was there doing some work at those times; once as a student and again as a geologist. The real treat was in 1997 when our group got down to the bottom levels.
I asked one of the engineers that took us down about specimens and he pretty much echoed what Bob mentioned that the best specimens today are in Rapid City at the SD School of Mines. I have seen very few specimens at shows and such, and I have one small piece of quartz on dolomite, but nothing spectacular.
3rd Dec 2011 17:12 UTCPaul Siegel 🌟
Patty Hearst is the daughter of William Randolph Hearst Jr. and the grandaughter of William Randolph Hearst.
Paul
3rd Dec 2011 17:41 UTCStephen Rose Expert
In the early 60's in Indiana I knew a collector and former Homestake geologist, then working for US Gypsum, who described collecting at the mine pretty much as Robert has. He did have a few small pyrite-quartz and strontionite specimens for trade, and I still have one or two. He was aware of the larger strontionites but had not been involved in their recovery. As noted, when high grade was found, the geo-engineering staff was gathered to bag it and see that it went to the mill. That system was suspect, however, as some staff would tell tales of senior people with metallic retirement accounts in their basements. Just rumors, of course!
I worked for Homestake for many years, although not at the Homestake mine, and knew many of the staff. During visits geologists could not point out areas in the mine where crystallized specimens might be found, but during one visit the geologist did show us a high grade area where we were allowed to collect a small sample with visible gold. As I recall, the best specimen went to a senior VP who was accompanying us.
Cheers,
Steve
3rd Dec 2011 18:36 UTCBart Cannon
My work at the Homestake was in the late 1980s. My contact was Bill Stanley, the exploration geologist. We talked about a persistent problem in the mining biz. That of the amateur prospector who thought they had a rich precious metal deposit based upon assays from the phony labs in Utah, Nevada and Arizona.
Bill said "there is not one producing gold or platinum mine on Earth that does not fire assay properly".
In 1984 I placed one ad in the California Mining Journal. To this day I am still getting business from that ad. Business that I don't want. I repeat Bill Stanley's opinion to each of them. I tell them to contact Acme Labs or Chemex ALS, and if the assays come in at more than 50 ppb precious metals, then, and only then, will I deign to analyze their ores.
Returning to the topic of the HBO "Deadwood". All the characters are based upon real people, including the two brothers who discovered the main Homestake mineralization. The Manuel brothers, one of whom killed his brother at breakfast in a saloon, and who soon afterward sold the richest gold mine in the country to George Hearst for $200,000.
I can not recommend the series highly enough, but I warn you that watching it with your mother might be a mistake.
You will love the working replicas of the stamp mills and the arrastras.
3rd Dec 2011 19:14 UTCDana Slaughter 🌟 Expert
I loved the Deadwood series as well and was bummed that HBO discontinued the series. The profanity was rampant but I can't imagine too many folks of that ilk dropping "Golly" and "Dang" when riled! I miss the series.
3rd Dec 2011 21:10 UTCTom Tucker
3rd Dec 2011 21:14 UTCAlbert Mura
3rd Dec 2011 23:08 UTCKeith Wood
4th Dec 2011 00:19 UTCmatthew neuzil
its bad enough i bid a few pieces up to 10$ i know it adds up n all but i try n keep my purchases very small
4th Dec 2011 00:28 UTCBart Cannon
17th Jun 2012 05:26 UTCKurt Triscori
I just found this discussion on Homestake minerals and thought I would comment. I worked at Homestake from 1987 until its shutdown in 2001. During my time there I was fortunate to build what I believe is one of the most comprehensive collections of specimens from the mine as well as the Double Rainbow mine that Homestake mined in the late 1960's. As Bob Farrar indicated, I was one of the fortunate collectors to acquire what I believe is the largest complete ball of green strontianite collected in 1963 from the 5450 level. It pushes 15 cm. I also have in my collection amythest, doubly terminated, water clear quartz crystals to 15 cm, native arsenic, molybdenum coated pyrites, anhydride, sphalerite, galena, tetrahedrahedrite, bournanite, yellow barite, apatite, and micro occurrences of rutile, anatase, fluorite, and others.
From the Double Rainbow mine I acquired museum quality specimens of terminated milky quartz crystals associated with arsenopyrite intervene trade twins and sphalerite. I also have museum quality specimens of argentiferous galena, siderite, galena, and arsenopyrite pseudo morphs after pyrrohtite. Please contact me if you are interested in seeing photographs.
Kurt Triscori
17th Jun 2012 09:27 UTCBart Cannon
My jobs for Homestake were all the same. Making polished sections of concentrates, and looking for trace inclusions of gold in arsenopyrite.
I never had the pleasure of looking at hand samples.
The two samples I obtained through this thread were very interesting.
They were quartz rich cummingtonite schist with scattered native gold.
I don't believe that there is another gold deposit on the planet with that association.
One piece had nice crystallized gold.
I would trade for some of the materials you mentioned.
Bart
14th Feb 2013 13:49 UTCJene
Jene
jenemoreno@yahoo.com
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Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 23, 2024 16:22:14