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RADIOACTIVE & RARE EARTH MINERALS

HISTORICAL INFORMATION – Dr. Eugene B. Gross collection

It is only by luck and/or good fortune that we have any specimens surviving in collections from the “Uranium rush” era of the 1950’s to early 1960’s.  During that period, the United States government encouraged prospecting and mining for Uranium in the Colorado Plateau area, generally including Colorado, Utah, Arizona, and New Mexico, as well as parts of Wyoming.  Everything radioactive was processed in the name of the “arms race”, i.e., at the time of the cold war with Russia.  Unfortunately, the Russians were doing the same at Jachymov, Czechoslovakia and other Central European localities, to get ready for a possible war with the USA.  The U.S. government was, at the same time, purchasing quantities of radioactive minerals (mostly Uraninite) from the famous mine at Shinkolobwe and other mining districts in Zaire.  Untold numbers of fine examples of Uraninite and other uranium-bearing ore minerals were undoubtedly destroyed in the course of processing the ores from these uranium-rich deposits for defense purposes.  Many of the specimens from USA localities, described within the radioactive minerals section of our web site, are from the Eugene B. Gross collection, and are historical specimens from this mining era.  Dr. Gross worked for the Atomic Energy Commission from 1952 - 1958 and was personally responsible for collecting these historically important specimens, and preserving them in his private collection.  Other unique radioactive mineral specimens from world wide locations will also be found on the following pages.

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Scroll to the bottom of this page for links to more radioactive mineral specimens. 

 

 


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= Fluorescent Specimen
   =  Radioactive Specimen

“SYSTEMATIC MINERALOGY OF URANIUM AND THORIUM”, C. Frondel, U.S. Geological Survey Bulletin #1064, 400 pages, 6 X 9”, soft cover, 1958.  This comprehensive report covers work done on behalf of the U.S. Atomic Energy Commission, and includes information covering all known uranium and thorium-bearing minerals on a worldwide basis.  Included are numerous tables and line drawings, and one b & w photo.  Each mineral species is described according to its synonymy, composition, crystallography and crystal habit, physical properties, optical properties, synthesis, identification, natural formation, and occurrence.  The descriptive mineralogy is followed by determinative tables in which the mineral species are arranged according to their X-ray powder-diffraction interplanar spacings, chemical composition, optical properties, color, specific gravity, and fluorescence.  The work is documented by more than 800 references to the world literature of the past 200 years!  This is an absolute “must have” reference for anyone interested in radioactive minerals! Published by the U.S. Government Printing Office, Washington, 1958.  Original, new copy, printed in 1958. 

Order Item BK-0575
Shipping weight:  2 pounds
Price:  $45.00


2797

BARYTE Var. Radian Baryte with PYRITE   
Lahošť  Mine, Duchcov, Ústí Region, Bohemia, Czech Republic

This locality has been known for many years as a source for radium-rich Baryte.  Chemically, radium is very similar to barium, and thus crystallizes with barium to form the Radian Baryte at this locality.  Radian Baryte is composed of radium-226 and barium sulfate.  The single specimen available from this well known Czech locality has numerous sharply terminated translucent, yellow-golden to dark smoky-golden color crystals of micro up to 7 mm size very richly deposited over most of the surface of the matrix.  The true yellow-golden color of the radian Baryte can be seen in the smaller crystals.  The larger crystals appear to have a smoky color due to microscopic inclusions of Pyrite.  With magnification, the tiny golden specks of Pyrite can be seen inside the transparent surfaces of the radian Baryte crystal faces and, in some cases, the Pyrite has been deposited in distinct zones producing phantoms within the individual crystals.  With magnification, one can see small masses of a bright orange unknown mineral, deposited around the edges of the groups of radian Baryte crystals.

Specimen size:  3 1/4” X 2 7/8” across X 1 1/4” thick
Order Item 2797
Price:  $265.00



1654


2670

2672

2673

2675

2677

2828

METATORBERNITE   
Musonoi Mine, near Kolwezi, Shaba Province (Katanga), Zaire (Democratic Republic of the Congo)

The basic description for Metatorbernite from this locality is that the mineral forms lustrous, tabular, medium to dark emerald green crystals, sometimes standing up on edge, often with a very rich coverage of intergrown crystals on the surface of the matrix.  Metatorbernite is a copper and uranium-bearing phosphate -- a member of the Autunite group.  Chemical composition is:  Cu2+(UO2)2(PO4)2).8H2O.  Not fluorescent.  In the past, the Musonoi Mine has produced what are certainly among the finest specimens of Metatorbernite found, worldwide.  At the present time, specimens are very difficult to obtain.  Most specimens in this group have Metatorbernite only, without associated mineralization, however on a few specimens small amounts of black massive Heterogenite are present.  Items 2830 and 2831 have massive Malachite associated.  NOTE:  On the small specimens, with smaller amounts of Metatorbernite crystals present, the overall mR/hr and CPM readings are naturally lower than the readings given for the larger, richer examples.  Pricing is according to the richness of crystallization, and overall specimen size.  

For background information on the Musonoi Mine see the Katanga! special issue of the "Mineralogical Record" magazine, Vol. 20, No. 4, July-August 1989, P.  274-275, and 286.  If you do not have this invaluable reference on the Uranium mines and minerals of the Shaba Province in Zaire (Congo), we have copies available for purchase, priced at $25.00 plus shipping.  Order item MR20-4.

 


 

 ITEM
NUMBER

 SPECIMEN SIZE
(INCHES)

mR/hr @ 1”
CD V-700
GM COUNTER

CPM @ 1”
CD V-700
GM COUNTER

 SPECIMEN
PRICE

1654

2 5/8

1 7/8

1 1/2

2.7

1,875

$100.00

2670

1 1/2

1

5/8

1.0

750

$  30.00

2672

1 5/8

1 1/4

3/4

.6

350

$  30.00

2673

1 1/2

1

5/8

1.2

850

$  30.00

2675

1 3/4

1 1/4

7/8

1.0

750

$  45.00

2677

1 7/8

1 3/8

1 3/8

2.0

1,330

$  40.00

2826

1 1/8

1

1/2

.5

300

$  20.00

2827

1 5/8

1

5/8

1.0

750

$  25.00

2828

2 1/8

1 1/2

  5/8

2.5

1,660

$  40.00

2829

1

3/8

1/2

.8

500

$  35.00

2830

1 3/4

1

1

2.0

1,330

$  45.00

2831

1 7/8

3/4

3/4

2.5

1,660

$  35.00

2832

1 5/8

1 1/4

3/4

1.2

850

$  35.00

2833

2 1/8

1 3/4

1 1/8

3.0

2,000

$  85.00

2834

2

1 1/4

7/8

3.0

2,000

$  80.00

2835

1 1/2

1

3/4

6.0

3,250

SOLD

2836

3 5/8

3 1/8

1 3/4

2.5

1,660

$  40.00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


2829

2830

2831

2832

 
     

2833

2834

2835

2836

2373

2374

2375

GUILLEMINITE, MALACHITE
Musonoi Mine, near Kolwezi, Shaba Province (Katanga), Zaire (Democratic Republic of the Congo)

Guilleminite is one of the moderately rare minerals found at the Musonoi Mine.  It is often found in the same mineralization zone as the Metatorbernite specimens described above.  Guilleminite is bright yellow, massive, and is a hydrated selenite of barium and uranium with the composition: 

Ba(UO

 

2

)

 

3

(SeO

 

3

)

 

2

(OH)

 

4

· 3H

 

2

O

Guilleminite is most often found associated with Malachite, Vandenbrandeite, Metatorbernite, and selenium-rich Digenite.  Selenium-rich Digenite, also known as selenian Digenite, was first identified from the Musonoi Mine and has yet to be reported from any other uranium mineral bearing deposits, worldwide.  Selenian Digenite is present on items 2374, 2375, 2840 and 2841 as dark metallic gray-black masses.  Vandenbrandeite is dark green, massive, and can often be visually differentiated from massive Malachite by its very dark “British racing green” color.  The associated Malachite is a lighter green in color.  Small amounts of micro crystalline Metatorbernite are associated on items 2373, 2375, and 2840 only.  Item 2841 has small amounts of massive black Heterogenite on the back of the specimen.

 

ITEM NO.

WEIGHT
(GRAMS)

SPECIMEN SIZE
(INCHES)

SPECIMEN
PRICE

 

2373

82.00

2

1 5/8

1

$  45.00

 

2374

124.50

2 1/4

1 3/4

1

$  90.00

 

2375

120.35

2 3/8

1 5/8

1

$  95.00

 

2840

53.88

1 1/2

1

1

$  20.00

 

2841

90.60

1 5/8

1 1/2

1 1/8

$  35.00

 


2840

2841

2502

2503

2504

2505

2525

2526

2527

TYUYAMUNITE
Monument #2 Mine, Monument Valley, Apache County, Arizona

These examples of bright golden-yellow Tyuyamunite are from the Dr. Eugene B. Gross collection of Uranium-bearing minerals, probably personally collected by Dr. Gross during the early 1960’s.  All specimens are of good to exceptional quality for this mineral, from a mine that is now a part of the history of the “Uranium rush” of the late 1950’s to early 1960’s.  The gram weights are given solely as a measure of specimen size.  Specimens are not priced by the gram.  Items 2502, 2503, and 2504, as well as 1980, 1981, and 1982 are pure Tyuyamunite without matrix.  Items 2505 and 2523 through 2535 have varying amounts of rock or sandstone matrix associated.  Tyuyamunite is: Ca(UO2)2V2O8.5-8H2O

 

 

ITEM
NO.

 

 WEIGHT(GRAMS)

 SPECIMEN SIZE(INCHES)

mR/hr @ 1”
CD V-700 GMCOUNTER

CPM @ 1”
CD V-700 GMCOUNTER

 SPECIMEN
PRICE

 

2502

1.40

3/4

1/2

1/4

~ 10

~ 7,500

SOLD

 

2503

1.50

5/8+

1/2

1/4+

~ 10

~ 7,500

SOLD

 

2504

1.80

3/4

1/2

3/8

~ 10

~ 7,500

SOLD

 

2505

2.25

3/4+

1/2

3/8

~ 10

~ 7,500

SOLD

 

2525

7.75

1 1/8

1 1/8

3/8

~ 5-10

~ 3,000 – 7,000

SOLD

 

2526

6.50

1 3/8

7/8

3/8

~ 5-10

~ 3,000 – 7,000

$ 10.00

 

2527

12.85

1 1/4

1

1/2

~ 5-10

~ 3,000 – 7,000

SOLD

 

2528

20.05

1 1/4

1

7/8

~ 5-10

~ 3,000 – 7,000

$ 18.50

 

2529

16.55

1 3/4

7/8

1/2

~ 5-10

~ 3,000 – 7,000

SOLD

 

2530

17.05

1 1/2

1 1/4

1/2+

~ 5-10

~ 3,000 – 7,000

$ 18.50

 

2531

18.55

1 1/2

1 1/4

3/8

~ 5-10

~ 3,000 – 7,000

$ 22.00

 

2532

15.10

1 1/2

1

5/8

~ 5-10

~ 3,000 – 7,000

SOLD

 

2533

29.70

1 3/8

1

3/4

~ 5-10

~ 3,000 – 7,000

SOLD

 

2534

34.95

2 1/4

1 5/8

3/8

~ 5-10

~ 3,000 – 7,000

$ 24.50

 

2535

68.95

2 5/8

2 1/8

3/4

~ 5-10

~ 3,000 – 7,000

$ 30.00

 

2536

217.35

2 3/4

2 1/8

1 1/2

10

7,500

SOLD

 

2537

119.00

2 1/4

2 1/8

1 1/8

10

7,500

SOLD

 

1980

1.00

Lot of 5 small speci-mens, +/- 1/4” to 3/8”

~ 5-10

~ 3,000 – 7,000

$ 7.50 / lot

 

1981

1.50

Lot of 4 small specimens, +/- 1/2”

~ 5-10

~ 3,000 – 7,000

SOLD

 

1982

3.00

Lot of small fragments,specimens & powder

~ 5-10

~ 3,000 – 7,000

$14.00/ lot

 


2527

2728

2729

2530

2532

2533

2534

2535

2536

2537

 

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