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= Fluorescent Specimen
   =  Radioactive Specimen

 


2630

2631

URANOCIRCITE 
Streuberg Quarry, Bergen U Deposit, Vogtland, Saxony, Germany (type locale)

Two specimens are currently available from the type locality in Germany, an occurrence known since the last
part of the nineteenth century.  Uranocircite is present as yellow-green platy aggregates and tetragonal crystals,
similar in appearance to Autunite, scattered on / in Quartz crystal covered matrix. The smaller specimen has
several tabular, individual Uranocircite crystals in an open vuggy area in drusy Quartz lined matrix.  The
larger specimen has numerous intergrown, yellow-green Uranocircite crystals deposited in an open vuggy
area running across the front / top of the specimen.  The open vuggy area is lined with small, pale gray to
 darker smoky Quartz crystals.  Exceptional UV fluorescence on both specimens -- bright yellow-green, similar
to Autunite.  The difference in the chemical composition between Autunite and Uranocircite is demonstrated by comparing the following: 

Autunite is:  Ca(UO2)2(PO4)2.10-12H2O
Uranocircite is:  Ba(UO2)2(PO4)2.12H2O



 

ITEM
NO.

 SPECIMEN SIZE(INCHES)

 SPECIMEN
PRICE

 

2630

1 7/8

1 3/8

7/8

SOLD

 

2631

4 3/4

2 1/2

1 5/8

$ 275.00

More specimens to be added soon.


2559

2560
2561
2562
2563

2564

2565

URANINITE 
Pick's Mine (Pick's Delta Mine; Delta Mine; Delta Uranium Mine; Hidden Splendor), Delta, San Rafael District (San Rafael Swell), Emery Co., Utah

The Delta Mine was one of the largest and earliest producers of Uranium ores during the “Uranium Rush” period of the mid-1950’s to early 1960’s.  It was discovered by Vernon J. Pick, and the first ore was produced in 1952.   It closed in 1957 after extraction of a million dollars worth (period value) of ore.  Specimens offered here are from the collection of Dr. Eugene B. Gross, who was employed by the AEC during the mid-1950’s to early 1960’s during the time when the mine was in its heyday.  The specimens listed below were saved from being processed as ore by Dr.  Gross while the mine was still in operation.  All are in natural condition, as collected (no saw cut surfaces).

The ore minerals of the Delta Mine were deposited in sandstone and mudstone from the Late Triassic period, typical of many of the Colorado Plateau Uranium ore mineral deposits.  Specimens consist of veinlets and masses of Uraninite associated with small amounts of secondary minerals, primarily present as coatings and small masses consisting of one or more of the following.  The list of associates given below is only a partial list of some of the more obvious associated minerals present on these specimens.  See MINDAT for a complete list of the minerals reported from the Delta Mine.

Yellow Orange  Yellow-orange Colorless-white  Metallic brass-yellow
Boltwoodite   Fourmarierite             Becquerelite      Gypsum                  Pyrite
Schoepite                            Zippeite    
Bayleyite        
Phosphuranylite        

NOTES REGARDING PRICING:  The gram weights of the specimens are given in the table below, simply as a measure of specimen size.  The specimens are not sold by the gram.  Small specimens have smaller amounts of Uraninite present, so the overall mR/hr and CPM readings are naturally lower on the small specimens, than the readings given for the larger examples.
 

 

 

 SPECIMEN NO.   

 WEIGHT(GRAMS)

 SPECIMEN SIZE(INCHES)

mR/hr @ 1”
CD V-700 GM
COUNTER

CPM @ 1”
CD V-700 GM
COUNTER

 SPECIMEN
PRICE

 

2559

5.35

1 1/4

1/2

3/8

15

10,000

SOLD

 

2560

12.80

1

1

3/8

25

16,600

SOLD

 

2561

17.81

1 1/4

1 1/8

5/8

10

7,500

SOLD

 

2562

18.60

1 1/4

3/4

5/8

15

10,000

SOLD

 

2563

15.47

1

1

3/4

10

7,500

SOLD

 

2564

32.10

1 1/2

3/4

5/8

15

10,000

SOLD

 

2565

15.75

1 5/8

5/8

1/2

45

27,500

SOLD

 

2566

120.30

3

1 3/4

1 3/8

15

7,500

$ 145.00

 

2567

148.44

2 1/2

1 1/2

1 1/4

35

22,500

$ 270.00

 

2568

118.40

3

1 5/8

1

10

7,500

$ 135.00

 

2569

195.80

2 3/8

2

1 3/8

>50

>30,000

SOLD

 

2670

309.40

3 1/8

3

2 1/2

35

22,500

$ 345.00



 


2566


2567


2568


2569


2570


1867

1868

1869

1870

1871

URANINITE, SCHROCKINGERITE    

Hideout Mine (Hideout No. 1 Mine), Deer Flat, White Canyon, White Canyon District, San Juan Co., Utah

The Hideout Mine is located in Section 14, T36S R17E in San Juan County.  Typical of the uranium-bearing sedimentary deposits of the White Canyon District, primary copper-bearing sulfides are also present – namely Bornite, Chalcopyrite, and Covellite.  All specimens have small amounts of Chalcopyrite intermixed with compact masses composed of microscopic Quartz granules, typical of many sedimentary deposits.  At the Hideout Mine, one of the last secondary uranium-bearing minerals to form was Schrockingerite, NaCa3(UO2)(CO3)3(CO4)F.10H2O.  Schrockingerite is light yellow-green, massive to micaceous, with a hexagonal crystal form.  It is most often found as platy to massive aggregates coating fracture seams in/on the Uraninite, rather than as individual crystals.  Johannite, a copper and uranium-bearing sulfate, also found at the Hideout Mine, has a similar physical appearance and color.  A very obvious visual difference between the two minerals, however, is that Schrockingerite is fluorescent very bright white-green under both SW and LW UV, while Johannite is not fluorescent.  Both Uraninite and Schrockingerite are present on all specimens described below.  All specimens are in natural condition, as field collected, with the exception of specimen MI-1869 which is an end cut with a semi-polished front surface.  All specimens are from the collection of Dr. Eugene B. Gross.

ITEM        NUMBER

WEIGHT(GRAMS)

SPECIMEN SIZE(INCHES)

mR/hr @ 1”
CD V-700 GM
COUNTER

CPM @ 1”
CD V-700 GM
COUNTER

 SPECIMEN
PRICE

1867

19.10

1 3/8

7/8

5/8

7

4,000

SOLD

1868

20.60

1

7/8

3/4

10

7,500

SOLD

1869

42.35

2

1

3/4

30

20,000

SOLD

1870

82.60

2 1/2

1 1/2

1 3/8

17

12,000

SOLD

1871

87.40

2 1/4

1 5/8

1 1/4

17

12,000

SOLD

1872

97.75

2

1 1/2

1 1/8

25

16,600

SOLD

1873

101.00

1 3/4

1 1/2

1 1/4

20

13,300

SOLD

1874

114.95

2 1/2

2

7/8

15

10,000

$  99.00

1875

242.00

3 1/2

1 7/8

1 1/2

40

25,000

SOLD

 


1872

1873

1874

1875

1851
1852

1853

1854

1855

1856

1857

1858

URANINITE     
Continental Uranium Mine #1, South Powder River Uranium District, Converse County, Wyoming

The Uraninite from the mines of this district was deposited in flat-lying, sedimentary deposits.  More than 75 developed, and now mostly depleted, mines and small prospects for Uraninite were staked out during the mid-1950’s to early 1960’s in the South Powder River Uranium District of Wyoming. The ores from the Continental Uranium Mine #1 were studied by the Atomic Energy Commission during this time period.  The specimens listed below are from the collection of Dr. Eugene B. Gross, who worked for the AEC.  He saved many Uraninite specimens for posterity, while most of the ore was processed for its content of Uraninite during the “cold war” period when the USA was in the arms race to build atomic weapons for self defense. 

Some of the specimens listed below have been cut and / or polished, and several have had Epoxy applied to some of the surfaces.  Epoxy was often used to stabilize specimens before they could be cut and polished, as part of the process of analyzing the richness or potential of the ore.  Specimens with Epoxy are not necessarily visually as interesting as some of the specimens remaining in natural condition, however, the Epoxy does provide some measure of protection for handling the specimens.  In the table below, the following abbreviations have been used to describe each specimen’s condition, or level of preparation.  Item MI-1858 has a very small amount of dark brown Sphalerite, and metallic grey Galena present.  These lead and zinc-bearing sulfide minerals were rarely found  associated with the Uraninite in the sedimentary Uraninite deposits of the south Powder River Uranium District in Wyoming, through they have been reported in similar sedimentary deposits at localities in Colorado and Utah.

N = natural                 PS = polished slice                 PEC =  polished end cut                     EP = Epoxy present                  

ITEM
NO.

 WEIGHT(GRAMS)

 SPECIMEN SIZE
INCHES)

 CONDITION / PREPARATION

mR/hr @ 1”
CD V-700 GM COUNTER

CPM @ 1”
CD V-700 GM
COUNTER

 SPECIMEN
PRICE

1851

2.50

5/8

1/2

3/8

N

5

300

SOLD

1852

2.57

5/8

1/2

1/8

PS

10

7,500

SOLD

1853

2.90

1/2

1/2

1/4-

N

25

16,600

SOLD

1854

3.57

5/8

1/2

1/2

PEC, EP

15

10,000

SOLD

1855

5.55

1

3/4

1/4

PS, EP

40

25,000

SOLD

1856

5.79

7/8

1/2

3/8

PEC, EP

20

13,300

SOLD

1857

19.17

1 1/8

7/8

1/4

PS, EP

45

27,500

SOLD

1858

27.33

2 3/8

1

3/4

N w/ Sphal., Galena

30

20,000

SOLD

1859

39.25

1 1/2

1

3/4

N

45

27,500

SOLD

1860

62.90

2 1/8

1 3/8

1 1/8

N

40

25,000

SOLD

1861

64.50

2 5/8

1

3/4

PEC

20

13,300

SOLD

1862

66.05

1 3/4

1 1/4

3/4

PEC

15

10,000

$  85.00

1863

87.20

2

1 3/4

1

PEC, EP

35

22,500

SOLD

1864

102.05

2 1/2

1 1/2

1 1/8

N

45

27,500

SOLD

1865

202.60

3

2

1 3/8

N

50

30,000

SOLD

1866

253.90

3

1 5/8

1 5/8

N

35

22,500

SOLD


 


1859

1860

1861

1862

1863

1864

1865

1866

 

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