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Calcite, USA, Alabama to Montana

Posted by Rock Currier  
Re: Calcite, USA
October 28, 2009 03:55AM
Rock,
I estimate around 100 flats by all collectors. I account for 40 of them with the couple of folks i dug with over several years before reclamation..
Re: Calcite, USA, Alabama to Montana
November 03, 2010 02:30PM
Hi Rock,

Thank you for all of your efforts here at Mindat. I saw your post on Calcite, USA, Alabama to Montana and took a look...

You mention the Calcite replacements after Ikaite from Alaska (not celestite). These were collected by Dave ? (sorry, I can't remember his last name, now deceased). Rudy Tschernich of the Rice Museum would know his last name as Dave had been active here in Washington through the local FM and another group, the Northwest Micro Mineral Study Group. He had personally collected these.

These examples, and many others of this type from other World localities are currently being researched by a group out of Denmark.

As a last thought regarding this material, I would ask that you reconsider your statement... "More familiar examples of this type are those shown further down from Camp Verde, Arizona." ... Other than being a pseudo, they really are not similar.

Also, for Montana, I see that two of my photos have been captured and added to this thread, they are the 2 Gallatin photos where specimens are displayed for a show (in this case, for the Kitsap Gem and Mineral Society show held in 2009. I personally collected and own all of these specimens and would be thankful of the recognition.

For your post Calcite, USA, Nevada to Wyoming, I see that another photo of another personally collected specimen has been added to this thread, this one the 45 cm calcite from the Gopher Valley Quarry located just outside of Sheridan, Oregon. This is likely the best large calcite ever recovered from the basalts of Oregon. This is due not to its large size, though there appears to be none known as large or larger, but rather for the exceptional water bubble that is an inch wide and travels 3 inches within one of the major rhombic crystals. Several other calcites from this pocket additionally contained 2 or possibly 3 phase inclusions, though this was the most outstanding example. These crystals were recovered from the finest pocket of natrolite ever recovered from Oregon (R. Tschernich personal communication). More photos from this dig are presented in my personal photos here at Mindat if you've an interest.

Again, thank you for all of your efforts Rock! Take care and all the very best!

John
Re: Calcite, USA, Alabama to Montana
November 03, 2010 08:12PM
Rucks Pit in Florida is still operating as both a commercial limerock quarry and a fee collection site last time I checked. The main pit from which the material is dredged is closed to collecting when flooded, which is most of the time. Most of the collection therefore is done on the piles of stockpiled material awaiting the trucks to take it offsite. The material from the pit is used throughout the region as road fill, and specimens (usually damaged to some degree by crushing to size and transport) can therefore be collected from new roads and construction sites.

The calcite forms in, on, and replaces the clams (Mercenaria spp.), whelks, and many smaller species of mollusks. Calcite also occurs in cavities in the limestone that don't appear to be directly associated with shells. The limestone is very porous and irregular in texture. Different material is found at different depths of the pit; only one level produces the calcite. Other levels produce fossils of various ages, including a number of new species of mollusks discovered there by Dr. Petuch.

An uncommon associated species is marcasite. It forms as a secondary crust of tiny iridescent brassy crystals on the surface of shells, calcite, or anywhere in the limestone.

I have photos of the locality and many specimens. I'm not sure if they are up to par for the article. Much more and better information than I could provide can be obtained directly from Eddie Rucks, the mine owner.
Re: Calcite, USA, Alabama to Montana
July 06, 2012 03:02AM
This is a fine Gallitin Canyon calcite specimen. It is nearly a floater, I can find only two 1-cm points of attachment from what must have been a large pocket with branching, lobular matrices in it, covered with tiny calcites. On top of those grew the large golden scalenohedrons. The largest calcite is 7.5 cm (3 inches) and is doubly terminated. All the large scalenohedrons are undamaged. The overall size of this grand specimen is 17 X 10 X 6 cm. The specimen was passed from Ronald L. Anderson of Littleton, CO to the Buckskin Booksellers of Ouray, CO.
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open | download - 0591close2.jpg (85.5 KB)
avatar Re: Calcite, USA, Alabama to Montana
July 07, 2012 12:30PM
John,
We do not appear to have Gallitin Canyon as a locality and quite frankly I have no idea where this might be. Can you equate it with a locality string on mindat? If not you may want to enter that locality into our database and then upload the image to our gallery. It is certainly good enough for the Best Mineral article on USA Calcites.

Rock Currier
Crystals not pistols.
avatar Re: Calcite, USA, Alabama to Montana
August 13, 2012 03:53PM
    
Gallatin canyon
[www.mindat.org]
avatar Re: Calcite, USA, Alabama to Montana
August 13, 2012 08:26PM
Thanks,
Images added to the article.

Rock Currier
Crystals not pistols.
Re: Calcite, USA, Alabama to Montana
December 29, 2012 01:22PM
CALCITE 7cm x 5cm Berry Materials Quarry, North Vernon Indiana, Jennings County. Collected 1970s. Prior to being known as the Berry Materials Quarry, this quarry was known as the Paul Frank Quarry. It is now (2012) inactive.
avatar Re: Calcite, USA, Alabama to Montana
December 29, 2012 08:36PM
Bob, I have made you a level 1 member of Mindat and you can now upload images to our gallery. If you will upload some calcite images from Indiana, I may include them in the Best Minerals article. Certainly the one you left as an attachment to your post I will include. If you would like to know how to upload images to our gallery see this: [www.mindat.org]

Rock Currier
Crystals not pistols.
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