Mixed Minerals from Tucson 2018


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C258 - Galena with Chalcopyrite, Sphalerite $ 650
9th of September Mine, Madan, Bulgaria
small cabinet - 5.5 x 4.5 x 3 cm


Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c258a.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c258b.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c258c.jpg]

New find of skeletal Galena from the 9th of September Mine. This is true skeletal Galena (not the manufactured specimens from about 10 years ago), only the second time in 20 years that they have been found. The Chalcopyrite and Sphalerite add color and contrast. Undamaged.


C259 - Galena with Quartz, Sphalerite $ 550
9th of September Mine, Madan, Bulgaria
small cabinet - 8 x 4.5 x 4 cm


Galena with Quartz, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c259a.jpg] Galena with Quartz, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c259b.jpg] Galena with Quartz, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c259c.jpg]

New find of skeletal Galena fromt eh 9th of September Mine. This is true skeletal Galena (not the manufactured specimens from about 10 years ago), only the second time in 20 years that they have been found. With Quartz crystals and Sphalerite. Undamaged.


C260 - Galena with Chalcopyrite, Sphalerite $ 300
9th of September Mine, Madan, Bulgaria
miniature - 4 x 2.5 x 2.5 cm


Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c260a.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c260b.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c260c.jpg]

New find of skeletal Galena from the 9th of September Mine. This is true skeletal Galena (not the manufactured specimens from about 10 years ago), only the second time in 20 years that they have been found. The Chalcopyrite and Sphalerite add color and contrast. Undamaged.


C261 - Galena with Chalcopyrite, Sphalerite $ 250
9th of September Mine, Madan, Bulgaria
small cabinet - 9 x 6 x 2.5 cm


Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c261a.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c261b.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c261c.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c261d.jpg]

Galena crystals with Chalcopyrite and Sphalerite on a thin piece of matrix covered on both sides by Quartz crystals. 'Just' a Galena specimen, but highly aesthetic and undamaged.


C262 - Galena with Chalcopyrite, Sphalerite $ 250
9th of September Mine, Madan, Bulgaria
small cabinet - 6.5 x 4.5 x 3 cm


Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c262a.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c262b.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c262c.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c262d.jpg]

Galena crystals with Chalcopyrite and Sphalerite. 'Just' a Galena specimen, but highly aesthetic and undamaged.


C263 - Galena with Chalcopyrite, Sphalerite $ 550
9th of September Mine, Madan, Bulgaria
small cabinet - 7 x 6 x 4 cm


Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c263a.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c263b.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c263c.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c263d.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c263e.jpg] Galena with Chalcopyrite, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c263f.jpg]

Unusual specimen composed of a single wide, thin Galena crystal (7cm) upon which grew semi-skeletal Galena crystals, Chalcopyrite, and Sphalerite. Highly aesthetic and undamaged. Both front and back sides shown.


C264 - Chalcopyrite with Quartz, Galena, Sphalerite $ 250
9th of September Mine, Madan, Bulgaria
small cabinet - 8.5 x 7 x 5 cm


Chalcopyrite with Quartz, Galena, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c264a.jpg] Chalcopyrite with Quartz, Galena, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c264b.jpg] Chalcopyrite with Quartz, Galena, Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c264c.jpg]

Large, bright Chalcopyrite crystals to 3cm associated with Quartz, Sphalerite, and Galena. Highly aesthetic with damage limited to a few Quartz crystals.


C265 - Galena on Chalcopyrite with Sphalerite $ 250
9th of September Mine, Madan, Bulgaria
small cabinet - 8 x 4 x 4 cm


Galena on Chalcopyrite with Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c265a.jpg] Galena on Chalcopyrite with Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c265b.jpg] Galena on Chalcopyrite with Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c265c.jpg] Galena on Chalcopyrite with Sphalerite from 9th of September Mine, Madan, Bulgaria [db_pics/pics/c265d.jpg]

Chalcopyrite crystals to 2.3 cm upon which grew small Galena crystals, on matrix covered by Sphalerite. Highly aesthetic and undamaged.


C266 - Galena $ 150
Krushev Dol Mine, Madan, Bulgaria
small cabinet - 6 x 6 x 3 cm


Galena from Krushev Dol Mine, Madan, Bulgaria [db_pics/pics/c266a.jpg] Galena from Krushev Dol Mine, Madan, Bulgaria [db_pics/pics/c266b.jpg]

Mirror lustrous Galena crystals that contrast well against the white matrix. Highly aesthetic and undamaged.


C267 - Amazonite $ 500
Minas Gerais, Brazil
cabinet - 13 x 10 x 7 cm


Amazonite from Minas Gerais, Brazil [db_pics/pics/c267a.jpg] Amazonite from Minas Gerais, Brazil [db_pics/pics/c267b.jpg] Amazonite from Minas Gerais, Brazil [db_pics/pics/c267c.jpg]

Large single Amazonite crystal with good color and remarkably good luster. Out of an old collection.


C268 - color change Dravite $ 150 SOLD
Nchongo, Umba Valley, Tanzania
thumbnail - 1 x 1 x 0.7 cm


color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c268a.jpg] color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c268b.jpg]

Single Dravite crystal exhibiting the 'Usambara effect' color change (named after nearby mountains). This is a different type of color change than the Alexandrite effect, where the color changes in different types of lighting. In this case, the Dravite crystal appears green in normal lighting, however when a single light source is transmitted through the crystal, at a certain thickness, a sudden color shift from green to red is observed, while less thick areas remain green. Well terminated, complete crystal. This is often demonstrated by taking thin slices of crystals. If, for instance, the critical thickness is 3mm, you can take two slices that are 2mm thick each, and each will appear to be green. If you overlap them slightly, creating a combined thick ness of 4mm the area that is overlapped will appear red. This crystal is dark but very transparent, gem quality. Transparent red with strong backlighting.


C269 - color change Dravite $ 200
Nchongo, Umba Valley, Tanzania
thumbnail - 1.3 x 1.1 x 1 cm


color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c269a.jpg] color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c269b.jpg]

Single Dravite crystal exhibiting the 'Usambara effect' color change (named after nearby mountains). This is a different type of color change than the Alexandrite effect, where the color changes in different types of lighting. In this case, the Dravite crystal appears green in normal lighting, however when a single light source is transmitted through the crystal, at a certain thickness, a sudden color shift from green to red is observed, while less thick areas remain green. Well terminated, complete crystal. This is often demonstrated by taking thin slices of crystals. If, for instance, the critical thickness is 3mm, you can take two slices that are 2mm thick each, and each will appear to be green. If you overlap them slightly, creating a combined thick ness of 4mm the area that is overlapped will appear red. This crystal is dark but very transparent, gem quality.Transparent red with strong backlighting.


C270 - color change Dravite $ 250 SOLD
Nchongo, Umba Valley, Tanzania
thumbnail - 1.6 x 1.1 x 1.1 cm


color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c270a.jpg] color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c270b.jpg]

Single Dravite crystal exhibiting the 'Usambara effect' color change (named after nearby mountains). This is a different type of color change than the Alexandrite effect, where the color changes in different types of lighting. In this case, the Dravite crystal appears green in normal lighting, however when a single light source is transmitted through the crystal, at a certain thickness, a sudden color shift from green to red is observed, while less thick areas remain green. Well terminated, complete crystal. This is often demonstrated by taking thin slices of crystals. If, for instance, the critical thickness is 3mm, you can take two slices that are 2mm thick each, and each will appear to be green. If you overlap them slightly, creating a combined thick ness of 4mm the area that is overlapped will appear red. This crystal is dark but very transparent, gem quality.Transparent red with strong backlighting.


C271 - color change Dravite $ 250
Nchongo, Umba Valley, Tanzania
thumbnail - 1.6 x 1.4 x 1.2 cm


color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c271a.jpg] color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c271b.jpg]

Single Dravite crystal exhibiting the 'Usambara effect' color change (named after nearby mountains). This is a different type of color change than the Alexandrite effect, where the color changes in different types of lighting. In this case, the Dravite crystal appears green in normal lighting, however when a single light source is transmitted through the crystal, at a certain thickness, a sudden color shift from green to red is observed, while less thick areas remain green. Well terminated, complete crystal. This is often demonstrated by taking thin slices of crystals. If, for instance, the critical thickness is 3mm, you can take two slices that are 2mm thick each, and each will appear to be green. If you overlap them slightly, creating a combined thick ness of 4mm the area that is overlapped will appear red. This crystal is dark but very transparent, gem quality. One chip on the termination.Transparent red with strong backlighting.


C272 - color change Dravite $ 150
Nchongo, Umba Valley, Tanzania
thumbnail - 1 x 0.9 x 0.8 cm


color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c272a.jpg] color change Dravite from Nchongo, Umba Valley, Tanzania [db_pics/pics/c272b.jpg]

Single Dravite crystal exhibiting the 'Usambara effect' color change (named after nearby mountains). This is a different type of color change than the Alexandrite effect, where the color changes in different types of lighting. In this case, the Dravite crystal appears green in normal lighting, however when a single light source is transmitted through the crystal, at a certain thickness, a sudden color shift from green to red is observed, while less thick areas remain green. Well terminated, complete crystal. This is often demonstrated by taking thin slices of crystals. If, for instance, the critical thickness is 3mm, you can take two slices that are 2mm thick each, and each will appear to be green. If you overlap them slightly, creating a combined thick ness of 4mm the area that is overlapped will appear red. This crystal is dark but very transparent, gem quality.Transparent red with strong backlighting.



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