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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
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 Posted: Mar 31, 2011 08:43 Post subject: A mineralogical trip through the states of USA - South Dakota |
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South Dakota, the "Mount Rushmore State"
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Baryte on Calcite
Elk Creek, Dalzell, Meade County, South Dakota, USA
Former Silvane Collection
Specimen size: 5.8 × 4.7 × 3.8 cm.
Main crystal size: 4.9 × 1 cm.
Very fluorescent long & short UV
Photo: Reference Specimens |
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36582 Time(s) |
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| Description: |
Baryte on Calcite
Elk Creek, Dalzell, Meade County, South Dakota, USA
Former Silvane Collection
Close up
Main crystal size: 4.9 × 1 cm.
Very fluorescent long & short UV
Photo: Reference Specimens |
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36588 Time(s) |
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Joaquin Montoro
Joined: 25 Nov 2010
Posts: 225
Location: Murcia (Spain)
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| Posted: Apr 01, 2011 04:55 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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One more...
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Tryphylite
Dan Patch Pegmatite, Black Hills, South Dakota, USA
7 x 6 x 5 cm. |
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36541 Time(s) |
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| Description: |
Tryphylite
Dan Patch Pegmatite, Black Hills, South Dakota, USA
7 x 6 x 5 cm. |
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36606 Time(s) |
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Damnati ad Metalla |
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rweaver
Joined: 13 Apr 2009
Posts: 259
Location: Ridgecrest, California
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| Posted: Apr 01, 2011 10:17 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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Former collection of Geary Murdock
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Baryte
Elk Creek, Meade Co., South Dakota, USA
2.9 cm x 5.6 cm |
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36460 Time(s) |
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rweaver
Joined: 13 Apr 2009
Posts: 259
Location: Ridgecrest, California
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| Posted: Apr 01, 2011 10:22 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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An older one from my collection
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Apatite
King Lithia Mine, Keystone, Pennington Co., South Dakota, USA
3.2 cm x 5.0 cm |
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36444 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2184
Location: USA
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| Posted: Apr 06, 2011 07:39 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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One for South Dakota.
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Baryte with Calcite
Elk Creek, Dalzell, Meade County, South Dakota, USA
Specimen size 7.8 x 5.5 cm. |
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36326 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2228
Location: Oklahoma
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| Posted: Apr 08, 2011 07:21 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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No trip to South Dakota would be complete without at least one specimen from the Tip Top Mine. Tiny salmon-pink sprays of montgomeryite to 3 mm - overall size of specimen 3.7 x 7.5 cm.
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Montgomeryite
Tip Top Mine, Fourmile, Custer District, Custer Co., South Dakota, USA
Specimen size: 3.7 x 7.5 cm.
Sprays Montgomeryite to 3 mm. |
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36209 Time(s) |
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Jim Prentiss
Joined: 01 Dec 2009
Posts: 103
Location: Ohio
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| Posted: Apr 21, 2011 13:36 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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Hello Forum,
Okay I have one specimen to post for South Dakota.
jimp
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Sinkankasite
Baker-Ferguson Mine, Keystone, Keystone District, Pennington County, South Dakota, USA
Field of view is 2 mm
This is another attempt with the Helicon Focus, I need one of those "Student Driver" signs to stick on my microscope. This Sinkankasite is from the type locallity at the Baker-Ferguson Mine, Keystone, Keystone District, Pennington County, South Dakota. The field of view is 2 mm |
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35957 Time(s) |
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vic rzonca
Joined: 18 Nov 2008
Posts: 820
Location: MA
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| Posted: May 18, 2012 09:21 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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Oligocene Channel Sand
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Calcite (Siliceous)
Shannon County, South Dakota, USA
7 x 8 cm. |
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33991 Time(s) |
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: May 18, 2012 10:13 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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Stunning Barytes!!!
_________________
Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Tracy
Joined: 15 Sep 2006
Posts: 551
Location: Toronto
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| Posted: Sep 30, 2012 13:04 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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Having fun with my camera today....
- Tracy
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Gypsum
Road Cut North of US 16, Pierre Shale, Chamberlain, South Dakota, USA
6.2 x 6.1 x 0.6 cm
Gypsum, spiral (discoid) concretion |
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32997 Time(s) |
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_________________
"Wisdom begins in wonder" - Socrates |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 311
Location: Hanmer, Ontario
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| Posted: Dec 09, 2012 10:26 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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Another addition to the South Dakota section.
Marcasite/pyrite from the Belle Fourche reservoir. The shale unit that holds these interesting marcasite specimens is usually submerged for most of the year. When the water levels are lowered in the Fall, the shale unit is exposed and the marcasite can be collected.
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Marcasite
Belle Fourche Reservoir, South Dakota, USA
2.5 x 2.5 cm |
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32451 Time(s) |
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| Description: |
Marcasite
Belle Fourche Reservoir, South Dakota, USA
6 x 6 x 4 cm |
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32369 Time(s) |
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_________________
Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
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| Posted: Dec 26, 2012 12:48 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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To update South Dakota I'm using this nice image of one of the famous Barytes from Elk Creek. The specimen and the photo are from Gneissware and it was already published in the Bob's rocks thread.
Thanks Bob!
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Baryte on Calcite
Elk Creek, Dalzell, Meade Co., South Dakota, USA
84 x 78 x 51 mm
A gorgeous, lustrous, gemmy, transparent, deep-amber-colored orthorhombic Baryte crystal measuring 24 mm in length is set perfectly upon a matrix covered by pretty yellow crystallized Calcite to 14 mm. The Baryte has a classic, razor sharp, chisel termination. The piece is perfectly proportioned and sits by itself for display. No damage. |
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32187 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2184
Location: USA
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| Posted: Nov 05, 2015 18:20 Post subject: Re: A mineralogical trip through the states of USA - South Dakota |
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| Mineral: | Fluorapatite, Quartz |
| Locality: | | King Lithia Mine, Greyhound Gulch, Keystone, Keystone District, Pennington County, South Dakota, USA |  |
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| Dimensions: | 6.2 x 5.9 cm |
| Description: |
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27006 Time(s) |
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