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RARE MINERALS FOR DISCRIMINATING COLLECTORS

  
 


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SPERRYLITE, CHALCOPYRITE
Oktyabrskiy Mine, Tal’nakh Ore Deposit, Noril’sk Region, Siberia, Russia
Originally from the collection of the Fersman Mineralogical Museum in Moscow, this specimen has a matrix composed of massive brassy-yellow Chalcopyite, with several bright silvery-metallic Sperrylite crystals of micro up to 4 mm size grouped together in the center of the matrix.  Sperrylite is PtAs2, platinum diarsenide.
Specimen size:   3/4” tall, 1/2” wide, and up to 5 mm thick.
Order Item MI-1302
Price:  $135. SOLD

GOLD
Crystalline Mine, Jamestown, California Mother Lode District, Tuolumne County, California
(Latitude 37°57'11"N, Longitude 120°26'31"W)
The Crystalline Mine site, near Jamestown, was first worked in the early 1860’s.  This specimen of crystallized leaf Gold is from the more recent workings, mined in December 1992.  The specimen is a very thin leaf of pure Gold with several microscopic trigonal (triangle shaped) faces on both sides of the leaf, mounted on a black peg stand, and displayed in a #4 plastic Perky Box.  Scattered, microscopic blebs of black Petzite are present on both sides of the leaf Gold.  Petzite is a silver and gold telluride, Ag3AuTe2.  No matrix.  For three pages of historical information on the Crystalline Mine and other mines in the Jamestown district, click on the following URL:  http://findarticles.com/p/articles/mi_qa3672/is_199401/ai_n8720365/pg_1
Specimen size:  14 mm long, 7 mm wide
Order Item MI-1303
Price:  $65.00


Front

Back

GOLD (Electrum)
Mount Gaines Gold Mine, Hornitos, California Mother Lode District, Mariposa County, California  (Latitude 37°32'29"N, Longitude 120°10'20"W)
The Mount Gaines Gold Mine is a lode claim, and was a producer of Gold along with minor values of silver, lead, copper and zinc.  This attractive specimen is crystalline in form, as illustrated in the
accompanying photographs, without rock matrix.  From the Lorraine Sofia Gold collection.
Specimen size:  16 mm tall,  11 mm wide,  8 mm thick.  4.78 grams
Order Item MI-1305
Price:  $225.00


A.

B.

C.

GOLD
Red Ledge Mine, near Washington, Nevada County, California
The Red Ledge Mine is one of the most famous localities in California for crystallized Gold.  Most of the Gold from the Red Ledge Mine is in the form of dendritic leaves, and specimens are often notable for their exceptionally bright surfaces and trigonal (triangle shaped) crystal faces.  The A. specimen is a flattened, single Gold crystal without matrix.  Item B. is a nearly pure, nicely crystallized Gold specimen with a minimal amount of Quartz associated.  Items C. and D. each have leaf Gold associated with a small amount of Quartz matrix.  Item E. is an exceptionally nice example of crystallized leaf Gold with trigonal crystal faces present on both sides of the specimen, and with a very small amount of white Quartz present.  Two views of item E. are shown.  For background information on the Red Ledge Mine, see the “Mineralogial Record” magazine, Nov-Dec 1982 (Vol. 13, No. 6, Gold I issue), P. 383

MI-1304

SPECIMEN SIZE
(MILLIMETERS)

SPECIMEN
PRICE

A.

6.7

3.0

1.0

$   25.00

B.

15.5

9.0

5.0

$   85.00

C.

6.8

3.0

2.0

$   18.50

D.

18.0

9.5

7.0

$   25.00

E.

23.7

12.0

8.0

$ 185.00

 

D. 

E. Front

E. Back
 

PLATINUM
Tulameen River, near Princeton, British Columbia, Canada
The Tulameen River area is well known as a source of native Platinum nuggets, and this occurrence is mentioned in several references such as the “Handbook of Mineralogy”, Vol. I, and “Dana’s System of Mineralogy”, 7th Edition, Vol. I.  Specimens are all small placer nuggets with attractive, freeform shapes, metallic steel silver-gray color, no matrix.  All specimens are in gelatin capsules.
 

MI-1289

SPECIMEN SIZE
(MILLIMETERS)

PRICE /
NUGGET

A.

1.5

1.0

$   8.50

B.

2.0

2.0

$ 10.00

PLATINUM
Bear Creek Mine, Kateel Mining District, Kateel River Quadrangle, near the headwaters of Anvik River, Alaska.
There are early reports of placer gold and platinum near the headwaters of the Anvik River.  This prospect may be in Holy Cross quadrangle.  A precise location for this prospect is unknown.  Prospecting on the Anvik River occurred as early as 1900 (Schrader and Brooks, 1900; Harrington, 1918) Coarse gold, along with platinum was reported in crystalline rocks at the headwaters of the Anvik River.  Gold was found on river bars, but presumably in insufficient quantities to justify mining (Harrington, 1918).  There are no references to prospecting in this drainage after 1919.
Specimens consist of tiny, metallic silver-gray stream-worn placer nuggets with attractive, freeform, rounded shapes, without matrix.  All specimens are in gelatin capsules.
 

MI-1290

SPECIMEN SIZE
(MILLIMETERS)

PRICE /
NUGGET

A.

1.0

1.0

$   5.00

B.

1.5

1.5

$   8.50

C.

2.0

2.0

$ 10.00

PLATINUM
Nizhni Tagilsk (Nischne-Tagilsk), Ural Mountains, Russia
Platinum was discovered in the early part of the 19th Century in the Ural Mountains, and was mined extensively from several large placer deposits.  All specimens from this well-known occurrence are metallic silver-gray in color, small, freeform native Platinum nuggets without matrix.  All specimens are in gelatin capsules.
 

MI-1291

SPECIMEN SIZE
(MILLIMETERS)

PRICE /
NUGGET

A.

.5

.5

$   5.00

B.

1.0

1.0

$   7.00

C.

1.5

1.0

$   8.50

D.

1.75

1.0

SOLD

NOTE:  All photos on this page were take with the Dino-Lite digital microscope.  For info., click here.
 

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