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Beryl : Be3Al2Si6O18 | |
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Aletai (Altay) Prefecture, Yili Hasake (Ili Kazakh) Autonomous Prefecture, Xinjiang (Xinjiang-Uygur) Autonomous Region, China A neat addition to any beryl suite! A pale blue partly transparent lustrous prismatic terminated crystal of aquamarine measuring 6.0 cm in length is set nicely upon a 7.1 x 4.3 x 3.9 cm matrix. Very slight chipping is present on the back side upper termination edge of the crystal. Perfect from the front and overall I think in good condition. ... |
| © Dan & Diana Weinrich Minerals | Photo ID: 235005 View Count: 31 |
Clinoatacamite : Cu2[(OH)3|Cl], Cumengeite : Pb21Cu20Cl42(OH)40·6H2O, Cuprite : Cu2O | |
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Xinjiang (Xinjiang-Uygur) Autonomous Region, China Crust of green clinoatacamite crystals over medieval bronze Chinese coin (Da Li Yuan Bao 766-769 A.D. of Tang dynasty). Additional data on the coin you can to find here: http://www.zeno.ru/showphoto.php?photo=44241&nocache=1 This clinoatacamite has unusual chemical composition - it contain sufficient quontity of calcium (Cu/Ca ratio is ~3/1). So, ... |
| © Pavel M. Kartashov | Photo ID: 104650 View Count: 118 |
Clinoatacamite : Cu2[(OH)3|Cl], Cumengeite : Pb21Cu20Cl42(OH)40·6H2O, Cuprite : Cu2O | |
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Xinjiang (Xinjiang-Uygur) Autonomous Region, China Crust of green clinoatacamite crystals over medieval bronze Chinese coin (Da Li Yuan Bao 766-769 A.D. of Tang dynasty). Additional data on the coin you can to find here: http://www.zeno.ru/showphoto.php?photo=44241&nocache=1 This clinoatacamite has unusual chemical composition - it contain sufficient quontity of calcium (Cu/Ca ratio is ~3/1). So, ... |
| © Pavel M. Kartashov | Photo ID: 104649 View Count: 96 |
Clinobisvanite : BiVO4, Bismutite : (BiO)2CO3, Natrobistantite : (Na,Cs)Bi(Ta,Nb,Sb)4O12 | |
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Koktokay (Keketuohai) Pegmatite field, Fuyun Co., Aletai (Altay) Prefecture, Yili Hasake (Ili Kazakh) Autonomous Prefecture, Xinjiang (Xinjiang-Uygur) Autonomous Region, China Yellow shining film of clinobisvanite - the mould of lost large natrobistantite grain. Pinkish-grey fibrous mineral is bismutite. Marine-blue granular masses is usual for locality natrobistantite of the second generation. Red inclusions in it is manganotantalite. Fragment of large pseudomorphose after bismutotantalite grain. FOV 3x3 mm. Collected ... |
| © Pavel M. Kartashov | Photo ID: 72312 View Count: 269 |
Cumengeite : Pb21Cu20Cl42(OH)40·6H2O, Clinoatacamite : Cu2[(OH)3|Cl], Cuprite : Cu2O | |
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Xinjiang (Xinjiang-Uygur) Autonomous Region, China Crust of blue cumengite over medieval bronze Chinese coin (Da Li Yuan Bao 766-769 A.D. of Tang dynasty). Additional data on the coin you can to find here: http://www.zeno.ru/showphoto.php?photo=44241&nocache=1 Associated minerals are green clinoatacamite and red cuprite. FOV is ~4.5-3.5 mm. The coin was unearthed near Kucha city. Pavel M. ... |
| © Pavel M. Kartashov | Photo ID: 104648 View Count: 257 |
Diopside : CaMg[Si2O6] | |
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Kunlun Mts (Kunlun Shan), Kashi (Kashgar; Qeshqer) Prefecture, Xinjiang (Xinjiang-Uygur) Autonomous Region, China Single crystal of transparent, green diopside with steep chisel-shaped termination. No damage. Overall size of mineral specimen: 18x9x6 mm. Size of individual crystals: 18 mm. |
| © 2003 John H. Betts | Photo ID: 8188 View Count: 580 |
Diopside : CaMg[Si2O6] | |
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Kunlun Mts (Kunlun Shan), Kashi (Kashgar; Qeshqer) Prefecture, Xinjiang (Xinjiang-Uygur) Autonomous Region, China 1.4 x 0.7 x 0.7 cm. A CHINESE gem crystal of diopside - VERY gemmy in fact, with good luster, complete all around and terminated. It has a fine light grass green color. |
| © Rob Lavinsky | Photo ID: 114630 View Count: 140 |
Diopside : CaMg[Si2O6] | |
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Kunlun Mts (Kunlun Shan), Kashi (Kashgar; Qeshqer) Prefecture, Xinjiang (Xinjiang-Uygur) Autonomous Region, China A superb Diopside with a gemmy termination, good crystal form and color. specimen size = 3 x 1.5 x 1.4 cm. |
| © Russell G. Rizzo | Photo ID: 115433 View Count: 136 |
Diopside : CaMg[Si2O6] | |
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Kunlun Mts (Kunlun Shan), Kashi (Kashgar; Qeshqer) Prefecture, Xinjiang (Xinjiang-Uygur) Autonomous Region, China 4.0 x 1.2 x 0.9 cm to 1.8 x 0.8 x 0.3 cm. 15 crystals of diopside from a 2003 find in China, many of them having large gemmy areas that are obscured in the photo by surface coatings -- and with complete terminations on one end. 93 grams total weight. |
| © Rob Lavinsky | Photo ID: 190221 View Count: 55 |
Diopside : CaMg[Si2O6] | |
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Kunlun Mts (Kunlun Shan), Kashi (Kashgar; Qeshqer) Prefecture, Xinjiang (Xinjiang-Uygur) Autonomous Region, China 3.5 x 1.4 x 1.2 cm. A gemmy and lustrous, complete all-around, green diopside crystal with a sharp, etched pyramidal termination from the 2002 finds at the Kunlun Mountains of China. This fine crystal was illustrated on Page 280, Fig. 15 of Vol. 34, #3, the May-June, 2003 Mineralogical Record issue. 11 grams. A superb example from this one-time, ... |
| © Rob Lavinsky | Photo ID: 210867 View Count: 55 |
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