|
|
|
|
|
|
|
|
|
|
|
|
|
This is a great collection of spheres that are American Cut
These have been cut and polished to perfection by local artist Brian Jackson. Large sizes and great material.
Please call us or email about purchasing one of these beauties.
Please call us or email about purchasing one of these beauties.
DUMORTIERITE 6 1/8 inches $600.00 15 1/2 lbs.
The rough for this sphere comes from Indian Pass, Picaho District, Chocolate Mountains, Imperial County, CA. Dumortierite specimens from Clip, Arizona, were described and analyzed by Diller and Whitfield (9, 10) in 1889. Later, material from this locality was analyzed by Ford (14, 15) and further studied by Schaller (43, 44, 45), who described the mineral as occurring only in loose boulders of quartz rock associated with kyanite, magnetite, and muscovite. Clip has passed out of existence. It is not to be found on modern maps of Arizona and no longer is it listed in the Postal Guide. Information regarding its location has been supplied by Dr. W. F. Foshagll , he writes that old atlases show the location of Clip to have been on the Colorado River, near the present camp of Cibola. The place also has been. referred to as Clipper Gap. He continues: "This is very close to the landmark called Picacho Peak and the two dumortierite localities are probably identical. Rolled boulders are sent us from time to time from Ogilby and specimens of kyanite that are similar to the kyanite associated with the dumortierite are in our collections from the American Girl Mine about 10 miles north of Ogilby, and others from three miles north of Ogilby. There is perhaps a belt of dumortierite and kyanite rocks in this district." Specimens in the Mackay Museum also show a striking siinilarity between the Clip dumortierite and that from Imperial County, California, in the vicinity of Picacho Peak. It is likely that the boulders at Clip actually had their origin in California". The above location description comes from : University of Nevada Bulletin, March 15, 1928. Mackay School of Mines Staff, on the mineral Dumortierite. It was published Quarterly by the University of Nevada, Reno, Nevada.
Tourmalinated Quartz 5 3/8 inches $750.00 9 1/2 lbs
The rough for this sphere comes from Brazil. Quartz is the most common mineral on Earth. It is found in nearly every geological environment and is a component of almost every rock type. It makes up about 12% of the earth's crust, occurring in a wide variety of igneous, metamorphic and sedimentary rocks. It is also the most varied in terms of variety and color.
Epidote and Magnetite. 5 inches $450.00 9 lbs.
The rough for this sphere comes from Big Pine, Inyo County, Ca
California Rhodonite 5 inches $400.00 9 lbs.
The rough for this sphere comes from Wrightwood, San Gabriel Mountains, Riverside County, CA.
