Tucson 2011
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ORTH11-1 Orthoclase, Baveno Twin $75
Udacha pegmatite field, Aldan province, Khabarovskiy Kray, Far-Eastern
Region, Russia
4.3 cm x 2.0 cm x 1.8 cm
A sharply-formed, partially translucent, Baveno-twinned crystal of Orthoclase (KAlSi3O8) from a very unusual locality. Acquired from Dmitriy Belakovskiy, a curator at the Fersman Mineralogical Museum in Moscow, during the 2011 Tucson show.
daylight
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SWUV
FOV ~ 5 x 4 mm
FOV
~ 4 x 3.3 mm
SN11-1 Barite Septarian Nodule $28 SOLD
Arnayon Mine, Drôme , France
7.5 cm x 5.8 cm x 3.2 cm
A nicely polished half nodule of phosphorite whose seams are filled with bright Barite crystals, brought to Tucson by Alain Carion. The Barite fluoresces under SWUV.
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on images for larger views FOV
~ 2.2 x 1.8 cm
CC11-09
Calcite with Pyrite and Marcasite $17
collected by Jared Freiburg, Geologist, state of Illinois
Conco Mine, North Aurora, Kane Co., Illinois
4.8 cm x 3.8 cm x 4.2 cm
The Calcite crystal on the right has transverse growth lines in two stripes down the center of the crystal, and a very nice phantom.
FOV ~ 1.6 x 1.5 cm click
on images for larger views FOV
~ 1.6 x 1.5 cm
CC11-11
Calcite with Pyrite and Marcasite $18
collected by Jared Freiburg, Geologist, state of Illinois
Conco Mine, North Aurora, Kane Co., Illinois
5.8 cm x 5.8 cm x 5 cm
There is an unusually-shaped crystal, visible as the largest crystal in the upper-right photo, that is shown in close-up in both bottom photos. It has a Calcite overgrowth capping its bottom face (see lower left photo), through which the bright inclusions can be seen in the lower right photo.
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MEN11-2 Opal variety Menilite $25 SOLD
Pantano
Camarillas, Agramón,
Albacete, Castile-La Mancha, Spain
4.8 cm x 2.5 cm x 2.4 cm
Opal variety Menilite (SiO2·nH2O) formed with imprints of fossil seashells, obtained from Josep Sanchez-LaFuente i Mariol. Pale yellow fluorescence under LWUV.
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MEN11-3 Opal variety Menilite $22 SOLD
Pantano
Camarillas, Agramón,
Albacete, Castile-La Mancha, Spain
4.0 cm x 2.3 cm x 1.6 cm
Opal variety Menilite (SiO2·nH2O) obtained from Josep Sanchez-LaFuente i Mariol. This one looks like it has the actual fossil seashell (not just an imprint), but it is 1 mm across and therefore requires a microscope or loupe to see anything. Pale yellow fluorescence under LWUV.
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MEN11-5 Opal variety Menilite $26 SOLD
Pantano
Camarillas, Agramón,
Albacete, Castile-La Mancha, Spain
5.8 cm x 2.3 cm x 1.8 cm
Opal variety Menilite (SiO2·nH2O) obtained from Josep Sanchez-LaFuente i Mariol. A really fantastic shape on this one even without fossil imprints. Pale yellow fluorescence under LWUV.
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MEN11-6 Opal variety Menilite $15 SOLD
Pantano
Camarillas, Agramón,
Albacete, Castile-La Mancha, Spain
3.3 cm x 1.6 cm x 1.3 cm
Opal variety Menilite (SiO2·nH2O), obtained from Josep Sanchez-LaFuente i Mariol. This one has the smoothest surface, even a little bit of luster. Pale yellow fluorescence under LWUV.
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ANT11-1 Antigorite $65
Abla,
Almería, Andalusia, Spain
22 cm x 4.5 cm x 2.5 cm
A large piece of fibrous, green Antigorite ((Mg,Fe2+)3(Si2O5)(OH)4), a mineral belonging to the Kaolinite-Serpentine group, brought to Tucson by Josep Sanchez-LaFuente i Mariol.
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AER11-1 Aerinite $24 SOLD
Lleida
(Lérida), Catalonia, Spain
3.6 cm x 3.4 cm x 2 cm
Aerinite, as in this fibrous blue specimen, has a complex formula: Ca5.1Na0.5(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12]
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QC11-1 Quartz with Chlorite $25
Diamantina, Minas Gerais, Brazil
6.6 cm x 4.1 cm x 3.1 cm
A Quartz point with wonderfully complex Chlorite (i.e., triclinic and monoclinic micaceous mineral) inclusions.
More Tucson 2011 updates are in Scolecite Gallery.
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