| 7232: |
Goethite pseudomorph after Pyrite - $28 Reduced to $22 Pelican Point Quarry, Pelican Point, Utah County, Utah 4.5 x 4.2 x 3.2 cm (1.8 x 1.7 x 1.3 inches) Specimen status: Available Click here to order A sharp and lustrous goethite pseudomorph after pyrite specimen, with an excellent nearly even brown color. It appears that any missing corners occurred before the pseudomorphing began, because these areas are the same tone and texture as the rest of the specimen. Cracks are natural consequences of the pseudomorph process, and do not threaten the integrity of the specimen. A very good example from this premier pseudomorph locality. |
| 7247: |
Pyrrhotite and Calcite - $10 Reduced to $8 Dal'negorsk, Primorskiy Kray, Russia 5.6 x 4.5 x 3.1 cm (2.2 x 1.8 x 1.2 inches) Specimen status: Available Click here to order Tabular pyrrhotite crystals to 3 mm and colorless calcites to 5 mm on a limonite matrix. The shape of the matrix suggests the presence of crystal faces (more evident in person than in the photos), so maybe this is a pseudomorph after some unidentified mineral species? |
| 7264: |
Fluorapatite - $6 Reduced
to $5 Emmons Quarry, Greenwood, Oxford County, Maine 6.2 x 5.0 x 3.0 cm (2.4 x 2.0 x 1.2 inches) Specimen status: Available Click here to order Dozens of nearly colorless fluorapatite
crystals to 3 mm scattered about on one face of a massive albite
matrix. I could not capture the apatites very well in white light, but
they become obvious by their shortwave UV fluorescence (second
picture). Personally collected September 2002.
|
| 7307: |
Chrysotile - $14 Reduced
to $12 Unclaimed Prospect, near Globe, Gila County, Arizona 5.0 x 2.9 x 2.3 cm (2.0 x 1.1 x 0.9 inches) Specimen status: Available Click here to order A group of parallel chrysotile hairs,
tightly clustered on a scrap of matrix. The asbestiform habit is very
evident. Stored in a small plastic bag, and quite safe.
|
| 7308: |
Orthochrysotile - $16 Reduced
to $14 El Dorado Mine, Salt River Canyon, Gila County, Arizona 5.2 x 2.1 x 1.0 cm (2.0 x 0.8 x 0.4 inches) Specimen status: Available Click here to order A group of long, parallel orthochrysotile hairs, having a very bad hair day. The asbestiform habit is very evident. Stored in a small plastic bag, and quite safe. |
| 7332: |
Anatase, Dravite, and Quartz - $8 Reduced
to $7 near Huanzala Mine, Huallanca District, Dos de Mayo Province, Huanuco Department, Peru 3.4 x 2.5 x 1.9 cm (1.3 x 1.0 x 0.7 inches) Specimen status: Available Click here to order A cluster of mostly transparent,
sharply-terminated quartz crystals is included by green-brown dravite
needles (confirmed by XRD) and silvery anatase crystals. The dravites
reach a few millimeters in length, while the anatase crystals reach one
millimeter. From a small
find that produced two flats of specimens in 2006, and has
been quiet since then. Unusual
association. No damage.
|
| 7411: |
Carrolite and Spherocobaltite - $12 Reduced to $9 Kamoya South II Mine, Kambove, Katanga, Democratic Republic of Congo 5.2 x 4.2 x 3.2 cm (2.0 x 1.7 x 1.3 inches) Specimen status: Available Click here to order A matrix of calcite and
quartz hosts several carrolite crystals reaching 8 mm across. Also
present are a few small patches of reddish pink, microcrystalline
spherocobaltite (third picture). This specimen notable not for the
carrolites (each is missing one or more crystal faces) but for the
carrolite/spherocobaltite association.
|
| 7440: |
Scolecite and Calcite - $40 Reduced to $32 Maharashtra, India 12.7 x 7.3 x 5.9 cm (5.0 x 2.9 x 2.3 inches) Specimen status: Available Click here to order The specimen consist of
several joined sprays of colorless to white, opaque to translucent
scolecite crystals. The two largest crystals are complete, and
partially coated with calcite. Minor dehydrated laumontite is also
present, so the specimen sheds a bit. As is common for these specimens,
a few terminations are missing from some of the smaller crystals.
|
| 7452: |
Fluorite - $30 Reduced to $24 Xianghuapu Mine, Chenzhou Prefecture, Hunan Province, China 8.8 x 7.2 x 5.7 cm (3.5 x 2.8 x 2.2 inches) Specimen status: Available Click here to order |
| 7578: |
Fluorite, Quartz, Muscovite,
and Arsenopyrite Yaogangxian Mine, Chenzhou Prefecture, Hunan Province, China 8.0 x 7.0 x 4.1 cm (3.1 x 2.8 x 1.6 inches) Specimen status: Sold Mostly transparent fluorite cubes to 2.1 cm are scattered about on a finely-crystalline muscovite matrix. The fluorite color depends on the lighting: blue-purple under daylight fluorescent (used to light the pictures), or more pure purple under halogen light. Deep purple-blue fluorescence under shortwave UV. The back features a complete 3.8 cm quartz crystal, as well as a powdery coating (probably cookeite) that could probably be removed if desired. A few small but bright and lustrous arsenopyrite crystals complete the assemblage. One minor fluorite edge cleave, and a few small matted spots on the muscovite, but no significant damage. |
