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9843:
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Calcite and Sphalerite
Ancash Department, Peru
6.7 x 5.8 x 3.8 cm (2.6 x 2.3 x 1.5 inches)
Specimen status: Sold
A mostly massive sphalerite matrix hosts
a rich coverage of colorless, icy, calcite crystals which reach 1 cm in
length. Between these calcites and the matrix lies a crust of white,
opaque calcite microcrystals. The surface of the sphalerite matrix is
crystalline, with a submetallic luster. A few small cleaves and minor
scattered edgewear is noted under magnification, but nothing that I
would call significant damage. Sits nicely for display as shown without
need for a stand.
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9944:
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Fluorite, Muscovite, and Albite
Gilgit District, Gilgit-Baltistan, Pakistan
8.1 x 6.8 x 4.9 cm (3.2 x 2.7 x 1.9 inches)
Specimen status: Sold
Light green, lightly frosted, translucent
to transparent fluorite octahedra on a crystalline albite matrix. The
largest fluorite measures 2.3 cm across. The missing point to this
largest fluorite appears natural. Muscovite 'books' to about 9 mm
across are also present. One edge and the back are sawn. The sawn edge
could be used as a display base.
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9946:
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Hematite
Skardu District, Baltistan, Gilgit-Baltistan, Pakistan
8.5 x 5.3 x 3.1 cm (3.3 x 2.1 x 1.2 inches)
Specimen status: Sold
Clusters of bright, metallic hematite
crystals on matrix. The hematite crystals are sharp and reach 9 mm
across. They also have a pitted surface, which appears to be natural.
The matrix is covered by a dull, golden but microcrystalline substance,
probably goethite. A few of the hematites are incomplete, but there is
no major damage.
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10016:
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Beryl (variety Emerald) - $100
Emerald Mines, Malyshevo, Ekaterinburg,
Ekaterinburgskaya Oblast', Middle Urals, Russia
6.2 x 5.5 x 4.3 cm (2.4 x 2.2 x 1.7 inches)
Specimen status: Available Click
here to order
An opaque, deep green, complete emerald
crystal rises from a schist and massive quartz matrix. 2.8 cm of
emerald of well-terminated emerald is exposed, although more might be
uncovered. The somewhat tabular emerald is contacted on back, but
otherwise complete and free of damage. Sits nicely for display as shown
without need for a stand.
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14625:
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Fluorite - $18
Spain
7.2 x 7.0 x 4.9 cm (2.8 x 2.8 x 1.9 inches)
Specimen status: Available Click
here to order
A large fluorite crystal with delicately
frosted faces. It is nearly complete; what may appear to be damage
along the bottom is in fact natural roughness due to etching and
secondary crystal growth. As is common among fluorites, the specimen's
color depends upon the lighting. It is light blue under daylight
fluorescent light (used for the pictures you see here), whereas it is
nearly colorless under xenon light. A few chips and cleaves, and the
price reflects this. The specimen came unlabeled as part of a large
Spanish mineral collection, so I don't have more specific locality
information.
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14626:
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Aragonite and Gypsum
Santa Eulalia District, Mun. de Aquiles Serdán,
Chihuahua, Mexico
7.3 x 5.5 x 4.9 cm (2.9 x 2.2 x 1.9 inches)
Specimen status: Sold
Looks like the eruption of an ice
volcano! Bright, snowy white (except for a dirty patch around the back)
and mostly opaque. A few of the top branches are frosted with minor
gypsum. Displays well. Currently mounted on an acrylic base with hot
glue, but this is easily removed if desired. No damage.
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14627:
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Mimetite and Wulfenite
Ojuela Mine, Mapimí, Mun. de Mapimí,
Durango, Mexico
6.2 x 4.2 x 2.7 cm (2.4 x 1.7 x 1.1 inches)
Specimen status: Sold
This specimen is almost 100% green,
opaque mimetite, in the form of tiny individual crystals and spherical
crystal clusters. Also present are a few small calcites as well as
several 2 mm, blocky to tabular, transparent to opaque, orange
wulfenites. No damage.
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14628:
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Calcite
State College, College Township, Centre County,
Pennsylvania
8.5 x 6.5 x 3.9 cm (3.3 x 2.6 x 1.5 inches)
Specimen status: Sold
A cluster of off-white, mostly
translucent calcite crystals with a central open area. Individual
crystals are flattened scalohedra, and reach 1.8 cm. Sawn back.
Displays well as shown without need for a stand. A few small nicks are
noted, but no significant damage.
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14629:
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Rhodochrosite
Champion Mine, Cinnamon Pass, Park District, Hinsdale
County, Colorado
7.1 x 6.4 x 4.7 cm (2.8 x 2.5 x 1.9 inches)
Specimen status: Sold
A cluster of sharp, bright rose-pink,
opaque rhodochrosite crystals in a cleft on matrix. Individual
rhodochrosite crystals reach about 5 mm across. The cleft is lined with
colorless quartz crystals, and scattered, mostly massive pyrite. Sawn
base.
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14630:
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Rhodochrosite
Champion Mine, Cinnamon Pass, Park District, Hinsdale
County, Colorado
7.8 x 6.1 x 5.5 cm (3.1 x 2.4 x 2.2 inches)
Specimen status: Sold
Clusters of sharp, bright
rose-pink, opaque rhodochrosite crystals on matrix.
Individual rhodochrosite crystals reach about 2 mm across. Also present
are colorless quartz crystals, and scattered, mostly massive mixed
sulfides.
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