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DATOLITE
Central Boron Mine, Dal’negorsk, Primorskiy Kray, Far Eastern Russia
A museum grade specimen, this beautiful Russian Datolite has a large blocky
crystal 2 3/4” X 2 5/8” X 3 1/2” across, with several additional crystals in
the group, most of them over 1” in size. The color is light beeswax yellow,
with translucency especially evident along the edges of the crystals. On
one side of the specimen, a marked pale greenish color is obvious and, on
the base of the specimen, the greenish color shows over about 75% of the
base of the crystal group. There is no matrix – the base of the specimen is
crystalline Datolite. For additional information on the mines and minerals
of the Dal’negorsk area, see the “Mineralogical Record”, Jan-Feb 2001, P.
3-30. Datolite is described on P.15, and several specimens are illustrated
on P. 16-17. The color zoning of yellowish to pale green is noticeable on
the specimen illustrated in Fig. 22 on P. 16, through the specimen
described herewith is predominantly a beeswax color with a small amount of
the greenish color zoning.
Specimen size: 4 7/8” X 3 3/8” across, X 2 1/4” tall
Order Item MI-1239
Price: $275. SOLD
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ANTIMONY
(native element, Sb)
Tom
Moore Mine, Erskine Creek Mining District, Kern County, California
The Erskine Creek Mining District is located north of Mojave, ENE of
Bakersfield, in Northeastern Kern County, California.
Antimony and Gold deposits were productive in this district in
the early 1890’s. Native
Antimony was originally mined from a Quartz vein at the Tom Moore
Mine. By 1893, native
Antimony was being mined from several prospects along the main vein,
and was also found as nodular masses.
The specimens available from this historic California mining
district consist of nodular masses of very bright silvery-metallic
native Antimony. In
addition, Stibnite and several oxides of Antimony have been identified
from this locality. The outside of each of these nodular masses has a very thin
layer, or “rind” composed of a mixture of light tan color massive
Antimony oxide minerals. The
oxide minerals identified to date include Valentinite, Cervantite,
and/or Stibiconite. Each
of the nodules has been opened to reveal the very bright silvery-white
metallic native Antimony interior!
A few specimens have interesting microscopic sprays composed of
flattened, acicular, dark red Kermesite associated.
Senarmontite was identified as near colorless octahedral micro
crystals and translucent, pale gray masses in very small vuggy areas
within the native Antimony. When
present, Stibnite is found as metallic gray masses and/or prismatic
micro crystals, very obviously different in color from the bright
metallic silvery-white color / luster of the native Antimony. In the table below, the following abbreviations apply for the
most important minerals present on each specimen: A = Antimony, S = Stibnite, K = Kermesite, Se = Senarmontite.
Cervantite, Valentinite, and/or Stibiconite are present in
varying amounts, as the light tan colored oxide layer on the outside
of each of the nodules. Specimen sizes range from ~1”, up to nearly
10” across! Sizes in
the table below are given in inches: width X height X depth.
In addition to the inch sizes, the gram weights are given.
Specimens are not necessarily priced by the gram – the gram
weights are given only as a measure of relative specimen size.
453.60 grams = 1 pound. The
4,100.00 gram specimen L., in the table below, is equivalent to about
9 pounds. Item P., @
4,310.00 grams, weighs roughly 9 3/4 pounds!
All of the photos accompanying this write-up illustrate sections of
opened native Antimony nodules. Items
B., D., F., G., I., L., M., and P. are individual halves.
The others are pairs, with the individual size measurements of
each half of the specimen given. When reassembled, both halves of each
of these nodules will fit back together, with little or no hint of the
bright shiny metallic silvery-gray native Antimony interior! Item C.
has three pieces which, when reassembled, yield a complete nodule!
Each pair or group of 3 will be sold only as a lot, @ the price
indicated. A 10% quantity
discount is given on all native Antimony specimens weighing > 500
grams. This discount has been calculated into the price given, in
the table below. Items L.
+ M. are offered individually, yet they are halves of a complete, very
large nodule. For items
L. + M., the 10% quantity discount is calculated in the price given
below, and an additional 10% is offered, if the large pair is
purchased together, i.e., a total of 20% off the list price.
Any of these specimens would make an excellent addition to a
collection specializing in California minerals, native elements, ore
minerals, etc. Reference:
“Minerals of California”, H. Pemberton, P.
50-51 (1983).
Discount price for items L. + M. (includes 10% quantity discount):
$1,660.00 + $1,458.00 = $3,118.00 / pair
Less additional 10% discount for purchase of the pair: - $312.00 =
$2,806.00 / net for the pair
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A. |
B. |
C. |
D. |
E. |
F. |
G. |
H. |
I. |
J. |
K. |
L. |
M. |
N. |
O. |
P. |
Q. |
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MI-022
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WEIGHT
(GRAMS)
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SPECIMEN SIZE
(INCHES)
WIDTH X HEIGHT X DEPTH
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MINERALS
PRESENT
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SPECIMEN
PRICE
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A.
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33.50 |
1 3/8 |
1 1/8 |
3/8 |
A
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$30.00 |
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B.
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46.47 / pair |
7/8, 7/8 |
5/8, 3/4 |
5/8, 5/8 |
A
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$41.75 |
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C.
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52.90 |
1 1/4 |
1 1/8 |
5/8 |
A
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$47.50 |
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D.
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64.90
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1 5/8
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1 3/8
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5/8
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A
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$58.50
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E.
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97.30 / pair
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1 3/8, 1 1/2
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3/4, 1
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3/4, 5/8
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A
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$87.50
/ pair
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F.
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112.05
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1 5/8
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1 3/8
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1
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A, K, S
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$100.00
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G.
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894.50
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4 1/4
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2 1/2
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2
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A
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$563.50
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H.
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103.77 / pair
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1 1/2, 1 1/4
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1, 7/8
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5/8, 5/8
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A
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$93.25
/ pair
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I.
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2,300.00
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4 1/2
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2 1/2
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3 1/2
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A, S, K
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$1,035.00
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J.
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151.44 / pair
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1 3/8, 1 7/8
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7/8, 1 1/8
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3/8, 1
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A, Se, S, K
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$136.25
/ pair
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K.
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217.89 / pair
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2, 1 3/4
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1 1/8, 1 1/8
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1 3/8, 1 1/8
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A, K, S
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$174.25
/ pair
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L.
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4,100.00
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6
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3
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3 3/4
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A, S
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$1,660.00
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M.
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3,600.00
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5 7/8
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2 3/4
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4
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A, S
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$1,458.00
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N.
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251.48 / pair
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1 7/8, 2 1/2
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1, 1 1/2
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1, 1
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A
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$201.25
/ pair
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O.
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310.75 / pair
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1 3/4, 1 5/8
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1 1/4, 1 1/4
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1 3/8, 1 1/2
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A, S, Se
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$248.50
/ pair
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P.
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4,310.00
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9 3/4
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2 3/4
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6
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A, S, K, Se
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$1,745.00
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Q.
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582.85 / pair
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2 1/2, 2 3/8
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1 3/4, 1 1/8
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1 1/4, 1 1/2
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A
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$419.50
/ pair
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R.
|
7.00
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Lot
of several small specimens of pure native Antimony, some with
minor matrix present. Sizes
range from 1/8” to 1/2”.
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A
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$6.00
/ lot
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=
Fluorescent Specimen
= Radioactive Specimen
