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A mineralogical trip through the states of USA - Texas
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Jordi Fabre
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PostPosted: Oct 03, 2010 14:45    Post subject: A mineralogical trip through the states of USA - Texas  

Texas, the "Lone Star State"




Gypsum - Terlingua-Texas.jpg
 Description:
Gypsum "Ram's Horn"
Crystal Cave, lower levels, (like, maybe the 300 level) Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
10.6 x 15.1 x 4.0 cm.
Gail Spann specimen
Joe Budd photo

To start the mineralogy of the Lone Star State we used the image of this fine Gypsum from Gail Spann.

Thanks Gail!
 Viewed:  45740 Time(s)

Gypsum - Terlingua-Texas.jpg


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Paul Bordovsky




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PostPosted: Oct 03, 2010 16:39    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Here is an important part of the mineralogy of Texas.

I thought this would be a good start, with more photos of minerals and localities to come.



filtered_P4129464a.jpg
 Description:
Karnes County, South Texas. 2009
 Viewed:  45416 Time(s)

filtered_P4129464a.jpg


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PostPosted: Oct 03, 2010 18:42    Post subject: Re: A mineralogical trip through the states of USA - Texas  

I can only wish this was in my collection. This is in the Paris School of Mines just has you walk through the front door. The label is about 2in high. This was a wow factor since this has to be one of the best Selenites/Gypsum for the location. Photo is mine.


paris01 031.jpg
 Description:
Gypsum
Terlingua Mercury District, Brewster County, Texas, USA

Gypsum "Ram's Horn"
 Viewed:  45386 Time(s)

paris01 031.jpg


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PostPosted: Oct 03, 2010 21:40    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Here is another ramshorn selenite on matrix, from a different locality. This one grew inside a concretion. This photo was taken the first night I had my then new dSLR. Still learning macro technique, so I apologize for the busy background. This came from a very large concretion.....a lot of specimens were recovered.......but only two good ones. The other selenite was hand sized, but not as curved. We flipped a coin, and I got first choice.

Pfeil Mine, Karnes Uranium District, Karnes County, Texas.



P8070352 ramshorncrop.jpg
 Description:
Gypsum with Calcite
Pfeil mine, Karnes Uranium District, Karnes Co., Texas, USA
Specimen size: 7.0 cm X 7.4 cm.
Crystal size: 3.6 cm.

Ramshorn gypsum (selenite) crystal 3.6 cm on bed of calcite rhombohedrons. Specimen is 7.0 cm X 7.4 cm. Crystals are formed inside concretions. Calcite fluoresces pink under short wave UV light. Self collected.
 Viewed:  45355 Time(s)

P8070352 ramshorncrop.jpg



P8070352 (Large)karnes ramshorn crop.jpg
 Description:
Gypsum with Calcite
Pfeil mine, Karnes Uranium District, Karnes Co., Texas, USA
Specimen size: 7.0 cm X 7.4 cm.
Crystal size: 3.6 cm.
 Viewed:  45376 Time(s)

P8070352 (Large)karnes ramshorn crop.jpg


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Paul Bordovsky




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PostPosted: Oct 03, 2010 23:27    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Here are some more selections from the various mines of the Karnes Uranium District, Karnes County, Texas.


47karnescal.jpg
 Description:
Calcite
Butler-Weddington mine, Karnes Uranium District, Karnes Co., Texas, USA
70mm height. Crystal 11mm on edge

Champagne colored rhombs on matrix, from a concretion. You can see where the edge of the rhomb grew against the concretion. 70mm in height, with the crystal 11mm on edge.
 Viewed:  45374 Time(s)

47karnescal.jpg



P6241529crshp.jpg
 Description:
Gypsum
Kellner mine, Karnes Uranium District, Karnes Co., Texas, USA
Large crystal: 2.0 X .6 X 1.1 cm.

Water clear gypsum (selenite) crystals on micrite matrix. Large crystal is 2.0 X .6 X 1.1 cm. Found inside concretions, self collected in 2003 during Kellner mine reclamation.
 Viewed:  45350 Time(s)

P6241529crshp.jpg



P6241520sharp.jpg
 Description:
Baryte
Wright-McGrady Mine, Karnes Uranium District, Karnes Co., Texas, USA
Specimen: 9.2 x 9.5 cm.
Largest crystal: 1.0 x .2 x 1.0 cm.

A cluster of three lustrous baryte crystals on drusy calcite, nestled inside a cavity in a chunk of a concretion. The largest crystal is 1.0 x .2 x 1.0 cm., while the specimen is 9.2 x 9.5 cm. Self collected during Wright-McCrady mine reclamation in 2000.
 Viewed:  45355 Time(s)

P6241520sharp.jpg



P6241526crop.jpg
 Description:
Baryte
Wright-McGrady Mine, Karnes Uranium District, Karnes Co., Texas, USA
Detail. Largest crystal: 1.0 x .2 x 1.0 cm.
 Viewed:  45360 Time(s)

P6241526crop.jpg



P6241525crop.jpg
 Description:
Baryte
Wright-McGrady Mine, Karnes Uranium District, Karnes Co., Texas, USA
Detail. Largest crystal: 1.0 x .2 x 1.0 cm.
 Viewed:  45391 Time(s)

P6241525crop.jpg



P6241530shrp.jpg
 Description:
Gypsum
Pfeil mine, Karnes Uranium District, Karnes Co., Texas, USA
50 mm.
 Viewed:  45340 Time(s)

P6241530shrp.jpg



PB Calcite 1-a.jpg
 Description:
Calcite
Wright-McGrady Mine, Karnes Uranium District, Karnes Co., Texas, USA
8mm on edge.

Calcite rhomb
 Viewed:  45351 Time(s)

PB Calcite 1-a.jpg



PB Calcite 2-a.jpg
 Description:
Calcite
Wright-McGrady Mine, Karnes Uranium District, Karnes Co., Texas, USA
8mm on edge.

Calcite rhomb
 Viewed:  45351 Time(s)

PB Calcite 2-a.jpg



sickenius-vug.jpg
 Description:
Calcite
Sickenius mine, Karnes Uranium District, Karnes Co., Texas, USA
Up to 3mm.

Vug with water clear calcite scalenohedrons up to 3mm.
 Viewed:  45346 Time(s)

sickenius-vug.jpg



concretion.jpg
 Description:
Calcite
Wright-McGrady Mine, Karnes Uranium District, Karnes Co., Texas, USA
120 x 150mm.

Chunk of a concretion 120 x 150mm. Scalenohedral calcite fluoresces light pink. Rhombohedral calcite is red, chalcedony is green, and the blue is the micrite matrix, although this is more a reflection than fluorescence.
 Viewed:  45355 Time(s)

concretion.jpg



P3211489a.jpg
 Description:
Calcite
Sickenius mine, Karnes Uranium District, Karnes Co., Texas, USA
Calcite crystal 45 x 37mm

45 x 37mm in concretion as is was broken open. One of the largest calcites found in the district.
 Viewed:  45349 Time(s)

P3211489a.jpg



P3211488a.jpg
 Description:
Calcite
Sickenius mine, Karnes Uranium District, Karnes Co., Texas, USA
Calcite crystal 45 x 37mm
 Viewed:  45355 Time(s)

P3211488a.jpg


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PostPosted: Oct 03, 2010 23:50    Post subject: Re: A mineralogical trip through the states of USA - Texas  

More pics from the Karnes Uranium District.


P3211490a.jpg
 Description:
Calcite
Sickenius mine, Karnes Uranium District, Karnes Co., Texas, USA
Calcite crystal 45 x 37mm

The previous crystal detached from the vug.
 Viewed:  45342 Time(s)

P3211490a.jpg



P3211490ab.jpg
 Description:
Calcite
Sickenius mine, Karnes Uranium District, Karnes Co., Texas, USA
Calcite crystal 45 x 37mm

You can see many tiny faces where the crystal grew against the matrix.
 Viewed:  45347 Time(s)

P3211490ab.jpg



P4192406a.jpg
 Description:
Odin contemplates a large chunk of opalized wood from Sickenius mine.
 Viewed:  45353 Time(s)

P4192406a.jpg



P4192407a.jpg
 Description:
Another chunk that came from the same huge log.
 Viewed:  45344 Time(s)

P4192407a.jpg



P4192411a.jpg
 Description:
Opalized wood
Sickenius mine, Karnes Uranium District, Karnes Co., Texas, USA
 Viewed:  45328 Time(s)

P4192411a.jpg



P4192351a.jpg
 Description:
The prickly pear cactus was blooming at the edge of the Sickenius mine.
 Viewed:  45312 Time(s)

P4192351a.jpg



P4192396a.jpg
 Description:
The prickly pear cactus was blooming at the edge of the Sickenius mine.
 Viewed:  45336 Time(s)

P4192396a.jpg


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Ed Huskinson




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PostPosted: Oct 04, 2010 00:43    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Here are some more minerals from Texas. They are all self-collected. i went to school in Canyon, Texas and El Paso Texas, worked for Pioneer Nuclear and was Noranda's Texas Projects Geologist. Hence the opportunities to collect these minerals. All of these specimens are from the Terlingua Mercury District and nearby environs.
Next I will post some odd-balls from the Lone Star State y'all (thanks Gail).



DSC02400.JPG
 Description:
Gypsum
Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
3.5 X 4.5 cm.

Gypsum "Ram's Horn". 3.5 X 4.5 cm. From a cavern (The "Crystal Cavern") between the 300 and 400 levels, Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas.
 Viewed:  45328 Time(s)

DSC02400.JPG



DSC02404.JPG
 Description:
Gypsum
Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
6.2 cm X 5 cm.

Same locality. I have displayed this double ram's horn at shows and in competition for years. Specimen is 6.2 cm X 5 cm.
 Viewed:  45349 Time(s)

DSC02404.JPG



DSC02405.JPG
 Description:
Gypsum
Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
6.2 cm X 5 cm.

Same specimen, a little better photo.
 Viewed:  45354 Time(s)

DSC02405.JPG



DSC02393.JPG
 Description:
Gypsum
Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
The curl is 1.7 cm across while the crystal itself is 2.5 cm long.

Same location. This is a small specimen. The curl is 1.7 cm across while the crystal itself is 2.5 cm long. This was collected with Dana Dixon in 1974. It had grown under a flat piece of limestone breccia, and was collected using a long screwdriver.
 Viewed:  45303 Time(s)

DSC02393.JPG



DSC02396.JPG
 Description:
Gypsum
Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
5.2 cm tall.

Same location. 5.2 cm tall. The Crystal Cavern is lined with low-angle rhombohedral calcite crystals. They crunch underfoot when you walk around in there. These gypsum crystals grow on the ceiling of the cavern and in various areas of the cave. Their growth may be influenced by air currents....
 Viewed:  45303 Time(s)

DSC02396.JPG



DSC02390.JPG
 Description:
Gypsum
Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
5.8 cm tall.

Same location. Specimen is 5.8 cm tall. This is a 780 degree spiral, very tight and even. Collecting it was one of the most rewarding things I have ever done..
 Viewed:  45323 Time(s)

DSC02390.JPG



DSC02441.JPG
 Description:
Calcite
Crystal Cavern, Terlingua Mercury District , Brewster Co., Texas, USA
9.5 cm X 10 cm.

Calcite, rhombohedral and zoned, same location. 9.5 cm X 10 cm. This is an example of the calcite that coats the walls, ceiling, and floor of the Crystal Cavern. The Terlingua Mercury District is characterized by breccia pipes, collapse breccias that formed just a big jumble of limestone boulders. Caves are not uncommon in the mines of the district. Lots of open cavities means good collecting.
 Viewed:  45291 Time(s)

DSC02441.JPG



DSC02429.JPG
 Description:
Calcite
Perry Pit, west side, California hill, Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
3.5 cm long.

Calcite, scalenohedral and zoned. Perry Pit, west side, California hill, Mariposa Mine, Terlingua Mercury district, Brewster County, Texas. 3.5 cm long. Crystals like this one are common in the district, often display planes along which dustings of cinnabar have grown. This one shows a thin coating of clay along an earlier crystal face.
 Viewed:  45267 Time(s)

DSC02429.JPG



DSC02434.JPG
 Description:
Limonite after Pyrite
Long Draw Graben, west of the Terlingua townsite, Terlingua Mercury District , Brewster Co., Texas, USA
2.3 cm across.

Limonite (it has a yellowish streak) after pyrite. The octahedron is 2.3 cm across. Long Draw Graben, west of the Terlingua townsite, Brewster County, Texas
 Viewed:  45288 Time(s)

DSC02434.JPG



DSC02437.JPG
 Description:
Montroydite
Perry Pit, west side, California hill, Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA
1.8 cm long.

This tiny crystal is 1.8 cm long. Montroydite is perfectly sectile normal to the c-axis. It is so flexible that the crystals can be bent, and even tied into knots. There are old texts that illustrate this. Had to throw in a rarity. I have a suite of the oxychlorides of mercury, but they are very difficult to photograph, and to be truthful, kind of boring unless you are a species collector. Miguel Romero got my best Gianellaite, the finest in the world. Wonder where that specimen wound up?.
 Viewed:  45276 Time(s)

DSC02437.JPG



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PostPosted: Oct 04, 2010 02:02    Post subject: Re: A mineralogical trip through the states of USA - Texas  

OK. Here are a few more things of interest from Texas


DSC02412.JPG
 Description:
Wulfenite
Hillside Adit, near the Burney Mine, Chinati Mts, Presidio Co., Texas, USA
3.5 cm X 5.0 cm.

Wulfenite. 3.5 cm X 5.0 cm. The yellow blades are on MnOx-coated quartz matrix. The blades are 6mm across. Hillside Adit, near the Burney Mine, Chinati Mountains, Brewster County, Texas. To say that I was surprised when i collected this specimens is an understatement. The pocket yielded only 7 specimens.
 Viewed:  45266 Time(s)

DSC02412.JPG



DSC02414.JPG
 Description:
Wulfenite
Hillside Adit, near the Burney Mine, Chinati Mts, Presidio Co., Texas, USA
3.0 X 4.5 cm. Blades are 0.5 cm across and 2 mm thick.

Wulfenite, same locality. The wulfenite crystals are blockier, resemble Tsumeb material, just much smaller. the specimen is 3.0 X 4.5 cm, and the blades are 0.5 cm across and 2 mm thick.
 Viewed:  45227 Time(s)

DSC02414.JPG



DSC02411.JPG
 Description:
Fluorite
Paisano Mine, Christmas Mts, Brewster Co., Texas, USA
5 cm. wide x 3 cm. across

Fluorite, Paisano Mine, Christmas Mountains, Brewster County, Texas. 5 cm wide. This is a replacement deposit wherein fluorite has replaced Cretaceous limestone along bedding planes above a shallow rhyolitic laccolith. The deposit is typified by these unusual "Bird's Eye" oolitic replacement textures.
 Viewed:  45217 Time(s)

DSC02411.JPG



DSC02410.JPG
 Description:
Fluorite
Paisano Mine, Christmas Mts, Brewster Co., Texas, USA
5 cm. wide x 3 cm. across

Same specimen, Sawed and polished base. 3 cm across. Again, note the unusual "Bird's Eye" textures.
 Viewed:  45243 Time(s)

DSC02410.JPG



DSC02438.JPG
 Description:
Calcite
Palo Duro Canyon area, Armstrong Co., Texas, USA
5 cm. X 7 cm.

Concretion, 5 cm X 7 cm. Calcite in fine sandstone / redbed matrix. Palo Duro Canyon, near Canyon, Texas. These used to be quite common in the canyon, but many of them have been picked up by visitors, picnickers, and the like (which, i suppose, includes me too).
 Viewed:  45282 Time(s)

DSC02438.JPG



DSC02444.JPG
 Description:
Phytosaur (ancestral crocodilian)
Palo Duro Canyon area, Armstrong Co., Texas, USA
3 cm. X 5.5 cm.

Phytosaur (ancestral crocodilian)
partial vertebra. 3 cm X 5.5 cm. Palo Duro Canyon, near Canyon, Texas. I found this fossil on my senior high school class field trip / picnic in April of 1965
 Viewed:  45335 Time(s)

DSC02444.JPG



DSC02450.JPG
 Description:
Phytosaur (ancestral crocodilian)
Palo Duro Canyon area, Armstrong Co., Texas, USA
3 cm. X 5.5 cm.

Here's a shot of the inside of the bone. You can see the cell structures.
 Viewed:  45234 Time(s)

DSC02450.JPG



DSC02448.JPG
 Description:
Phytosaur (ancestral crocodilian)
Palo Duro Canyon area, Armstrong Co., Texas, USA
3.5 cm. X 6.5 cm.

Another partial Phytosaur vertebra. 3.5 cm X 6.5 cm This was found in the same area (about 50 meters or so away) while on a geology field trip two years later (in 1967).
 Viewed:  45297 Time(s)

DSC02448.JPG



DSC02453.JPG
 Description:
Phytosaur (ancestral crocodilian)
Palo Duro Canyon area, Armstrong Co., Texas, USA
Total length of the vertebra is 6.5 cm.

Wonder of wonders!! When I got home after finding the second bone, I discovered that the two pieces fit together perfectly. Two years and over 50 meters apart. Total length of the vertebra is 6.5 cm.
 Viewed:  45232 Time(s)

DSC02453.JPG



DSC02432.JPG
 Description:
Celestite
Palo Duro Canyon area, Armstrong Co., Texas, USA
4.3 X 4.0 cm.

Celestite. 4.3 X 4.0 cm. Palo Duro Canyon, near Canyon, Texas. There are thin beds of gypsum and rare thin beds of celestite in the Permian redbeds of Palo Duro Canyon. Note how the redbed matrix has slightly stained the margins of the specimen.
 Viewed:  45248 Time(s)

DSC02432.JPG



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Antonio Alcaide
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PostPosted: Oct 04, 2010 03:08    Post subject: Re: A mineralogical trip through the states of USA - Texas  

In astonishment!!

( )
I cannot say words.

Paul, cool pics from Texas, including flowers and child.

Ed, my mind remains twisted like your gypsums. Please, go on. What can I say about the vertebrae fitting? Although 1967/1967 could sound near to prehistory for young minsurfers I am afraid -not my case-, so you had some advantage (I am kidding, of course).

Cheers

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PostPosted: Oct 04, 2010 09:26    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Ed-

Thanks for the great calcites and gypsums!!! I graduated from Canyon High School and spent MANY days hiking through Palo Duro Canyon. Was aware of the celestine but never found any. I do have some calcites from there, however, as well as phytosaur vertebrea and teeth.

Thanks again for posting!

Darren
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PostPosted: Oct 04, 2010 12:17    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Ah. So Darren, we have some common ground. I found the 1st half of the vertebra on my senior year picnic from Caprock High School there in Amarillo. The second half was on our 1st field trip for Historical Geology at WTSU there in Canyon. I found only one tooth, either Phytosaur or Buetnerria, not sure which. The celestite was a pleasant surprise.

Thanks for your click-back.

Ed

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PostPosted: Oct 04, 2010 12:26    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Antonio, you silver-tongued devil. Thank you for your words of appreciation. I am honored by your reply. I posted the specimens from Texas because the crystals are unusual and beautiful, and were collected BEFORE I had ever attended the Tucson show.(1975, first time to go there). To my knowledge, the location in the Chinati Mountains is the only known occurrence of wulfenite in Texas. So, pretty cool, eh?

Thanks again for the input. Wait till we do Mississippi.

Gratefully yours,

Ed

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PostPosted: Oct 04, 2010 13:56    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Ed Huskinson wrote:
Antonio, you silver-tongued devil. [...] Wait till we do Mississippi.


My tongue is fairly dull in English, you all are lucky for that :-) However I admire your sportmanship.
Very cool indeed your rare pieces from Texas. Texas alone has the same area as Spain or so.

Then, I am looking forward to seeing Mississipi trip.

Kind regards

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PostPosted: Oct 04, 2010 22:27    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Ed-

Spent my youthful days skateboarding all over Caprock, and trying to climb that big orange monster (Auditorium?) - never made it! We lived on Browning Street before my parents divorced and I moved to my dad's place in Timbercreek Canyon. My maternal grandparents lived on Nelson Street, just behind the church - 1 street over from Caprock! I remember trying to jump a skateboard down those outdoor concrete steps at Caprock. My mom graduated from there i about '65. Small world, huh????

Darren
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PostPosted: Oct 27, 2010 07:42    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Hello Everyone,

I also have one entry from Texas.

jimp



Calcite 10b.JPG
 Description:
Calcite
Chalk Hill Quarry, Dallas, Dallas Co., Texas, USA
Crystals average about 0.25" (6mm)

These little Calcites are from the Chalk Hill Quarry, Dallas County, Texas the crystals average about 0.25" (6mm)
 Viewed:  44933 Time(s)

Calcite 10b.JPG


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PostPosted: Oct 15, 2011 13:40    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Mariposa Calcite - Texas - 37lbs 10 oz
Mariposa Mine (California Mountain Mine),
Terlingua District, Brewster Co., Texas, USA



Mariposa.JPG
 Description:
Calcite
Mariposa Mine, Terlingua District, Brewster Co., Texas, USA
18" x 14"
 Viewed:  43445 Time(s)

Mariposa.JPG


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PostPosted: Nov 26, 2011 08:31    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Near Austin, Texas. Travis County. Celestine.
Collected by a friend of ours, Shawn Maddox. Now in our collection. We also added another 12 or so from Blake Barnett's inventory.

2.5 cm x 5.0 cm



IMAG2197.jpg
 Description:
Celestine
Bull Creek, Austin, Travis County, Texas, USA
2.5 x 5.0 cm.
 Viewed:  43097 Time(s)

IMAG2197.jpg



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PostPosted: Nov 26, 2011 12:03    Post subject: Re: A mineralogical trip through the states of USA - Texas  

Ed:

Great posts, and great stories! Thanks for sharing! That Phytosaur fossil find was inspiring- to come back to the same location, and find the other half... It is true skill. Bravo!

Thank you for posting the pics, and the effort to find them and share them.
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PostPosted: Jan 13, 2013 12:32    Post subject: Re: A mineralogical trip through the states of USA - Texas  

A new addition for the Lone Star State.

This one coming from the Spanish side of FMF ( https://www.foro-minerales.com/forum/viewtopic.php?p=64624#64624 ) and is from the Javier Ruiz Martin collection.



SAM_1839R.JPG
 Description:
Pyrite
Road Cut, Dallas County, Texas, USA
6 x 3 x 3 cm.
Collection and photo: Javier Ruiz Martin

Pyrite on a Pyrite nodule
 Viewed:  39482 Time(s)

SAM_1839R.JPG


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PostPosted: Jun 01, 2013 17:24    Post subject: Re: A mineralogical trip through the states of USA - Texas  

One more interesting pyrite from Texas

Regards



Pirita texas.jpg
 Description:
Pyrite
TXI Cement Quarry, Ellis Co., Texas, USA
13 x 8 x 8 cm
Cluster of cuboctahedral crystals of pyrite on limestone.
 Viewed:  38238 Time(s)

Pirita texas.jpg



pirita texas detalle.jpg
 Description:
Pyrite
TXI Cement Quarry, Ellis Co., Texas, USA
13 x 8 x 8 cm
Detail of the pyrite cluster. The faces of the cubes show hillocks and the octahedral faces have cuboctahedral growths. Not very common!!
 Viewed:  38225 Time(s)

pirita texas detalle.jpg



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