A.
B.
C.
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AZURITE
Morenci Pit, Copper Mountain Area, Clifton-Morenci District, Greenlee County, Arizona
The three specimens illustrated here were collected circa April-May
1996......individual descriptions follow:
A. More than 25 double terminated, bright midnight blue
Azurite crystals have formed an attractive group, without matrix. The individual crystals
range from approximately 3 mm up to 6 mm in length, and many of the individual crystals
have formed into rosette-like aggregates. Nice "thumbnail" size specimen.
Size: 1" X 3/4" X 3/4"
Order item MI-016A. SOLD
B. This grouping is composed of 6 rosette-like Azurite crystal intergrowths, with
4 of the rosettes measuring +/- 3/8” in diameter, and two slightly smaller in
size. The crystal group is complete on all sides, i.e., no matrix or point of
attachment. Color is dark midnight blue, very lustrous.
Size: 1 1/4” X 7/8”.
Order item MI-016B. SOLD
C. This non-matrix specimen has 15+ rosettes, each composed of numerous
intergrown, dark midnight blue Azurite crystals. The individual rosettes average +/-
1/4” and slightly larger in diameter.
Size: 1 3/8” X 3/4”.
Order item MI-016C. SOLD
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A.
B.
C.
D.
E. |
DRAVITE TOURMALINE
Blue Sky Prospect, Santa Cruz, Sonora, Mexico
This locality has been known and worked for many years for beautifully
crystallized, satin luster, fan-like crystal groups of black Tourmaline.
The Blue Sky Prospect is a pegmatite in the Santa Cruz District, and this
district has been worked since at least the 1950’s for Tourmaline, Scheelite,
Powellite, Apatite, and other minerals. Originally thought to be Schorl,
primarily because of the color, the Tourmaline from this locality has more
recently been identified as Dravite. The crystals are actually a dark
brown-black in color, and have a wonderful satin luster. The basic habit of
crystallization on these specimens is fan-like intergrowths composed of
multiple crystals on Quartz matrix. Item E. only has an very attractive,
upright, fan-like intergrowth composed of many satin luster Dravite
Tourmaline crystals perched on top of a healed section of a large smoky
Quartz crystal. These specimens were collected circa 15 years ago. All are
exceptionally attractive!
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MI-1162 |
SPECIMEN SIZE
(INCHES) |
LENGTH OF LARGEST
XLS. |
SPECIMEN
PRICE |
|
A. |
1 7/8 |
1 1/2 |
1 1/2 |
1 1/8 |
$ 55.00 |
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B. |
2 5/8 |
2 |
1 1/4 |
1 1/8 |
$ 50.00 |
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C. |
3 1/4 |
1 3/4 |
1 1/8 |
7/8 |
$ 45.00 |
|
D. |
2 1/2 |
2 |
1 1/2 |
1 1/8 |
$ 60.00 |
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E. |
3 1/4 |
2 1/8 |
1 7/8 |
1 1/2 |
$125.00 |
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A.
B. |
THAUMASITE
N’Chwaning II Mine, near Kuruman, Kalahari Manganese Field, No. Cape
Province, South Africa
Two specimens are available from this noted occurrence for Thaumasite. For
background information see the “Mineralogical Record” magazine, Vol. 22, No.
4 (July-August 1991), P. 293.
A. An intergrowth composed of many very pale yellow-white to colorless
Thaumasite crystal sections, and a few terminated micro crystals (20-30X
magnification required), are together on a crystalline Thaumasite matrix.
The terminated crystals are 2 to 3 mm in length, with pinacoidal
terminations.
Specimen size: 3/4” X 5/8” across, X 1/2” thick
Order Item MI-1156-A Price: $25.00
B. Two very pale yellowish-white, water clear, flat
top terminated, hexagonal Thaumasite crystals are standing up in parallel
orientation, accompanied by a couple of smaller terminated crystals, on
massive Thaumasite matrix. The two
largest crystals are 11 mm tall, with flat terminations, and the largest
crystal is 5 mm in cross section.
Specimen size: 5/8” tall, 1/2” wide, 3/8” thick
Order Item MI-1156-B SOLD
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CINNABAR on DOLOMTE
Wan-Shan-Ch’Ang, Guizhou (Kweichow), China
From the world’s best-known locality for crystallized Cinnabar, this
specimen has two very sharp, bright red twinned crystals individually
growing on the typical white Dolomite crystal covered matrix. The twinned
Cinnabar crystals measure near ½" wide X near ½" tall, and
3/8" wide X 3/8" tall.
Specimen size: 4 1/4" X 1 7/8" across, X 1 1/8" thick.
Order Item MI-020 SOLD |
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A.
B. |
SCHORL TOURMALINE
Erongo Mountains, Karibib, Namibia
Two completely different habits of crystallization are present on these
“thumbnail” size specimens . . .
A. Very shiny black crystal group, with many
prismatic crystals forming a fan-like, divergent spray without matrix.
Equally nice development of the crystallization on the front and back of the
specimen!
Specimen size: 1 1/8” tall, 5/8”+ wide at the top of the fan, and 1/2”
thick.
Order Item MI-1157-A Price: $20.00
B. Nice large “thumbnail” size specimen with three
terminated, very sharp black Schorl crystals (+/- 1/2” X 1/2”) present in
the group, accompanied by many smaller xls. The interesting feature of the
three large crystals is that every other prism face has a frosted luster,
with alternating crystal faces showing very shiny, mirror-like development.
The terminations also have the frosted luster.
Specimen size: 1 1/8” X 1” across, X 3/4” thick
Order Item MI-1157-B Price: $25.00 |
=
Fluorescent Specimen
= Radioactive Specimen
