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Albite (Var: Cleavelandite) : Na[AlSi3O8], Schorl : [Na][Fe2+3][Al6][(OH)3|OH|(BO3)3|Si6O18] | |
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Lookout Mine (Lookout prospect; Upper Hercules; Hercules group), Ramona District, San Diego Co., California, USA A classic pegmatitic combination specimen, from a small prospect in San Diego and considered quite the rare locality piece there. Korpi collection. 9.8 x 6.9 x 4.2 cm |
| © Rob Lavinsky | Photo ID: 27313 View Count: 317 |
Elbaite : [Na][(Li,Al)3][Al6][(OH)3|OH|(BO3)3|Si6O18] | |
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Lookout Mine (Lookout prospect; Upper Hercules; Hercules group), Ramona District, San Diego Co., California, USA 4.0 x 3.2 x 2.8 cm. A bizarrely sculpted tourmaline crystal that is complexly formed from etching effects in situ, into this cityscape form. It is a dark green color, but it is green, and the edges are gemmy when backlit. A great rarity for this small locality, and a very fascinating tourmaline in its own right, as well. Ex. William Larson ... |
| © Rob Lavinsky | Photo ID: 249643 View Count: 49 |
Elbaite-Schorl Series | |
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Lookout Mine (Lookout prospect; Upper Hercules; Hercules group), Ramona District, San Diego Co., California, USA A natural dark reddish brown to yellowish green tourmaline crystal with modified basal termination; from the Lookout mine (Upper Hercules), Hatfield Creek, Ramona, San Diego County, California, USA. Specimen measures approximately 22x16x15mm. San Diego Mining Company, Hercules dike main trench, circa March 1997. |
| © 2006 SLR | Photo ID: 59860 View Count: 332 |
Schorl : [Na][Fe2+3][Al6][(OH)3|OH|(BO3)3|Si6O18] | |
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Lookout Mine (Lookout prospect; Upper Hercules; Hercules group), Ramona District, San Diego Co., California, USA 4.4 x 1.9 x 1.5 cm. Two fine schorl crystals, jet black, and beautiful. These are complete-all-around and well terminated on their tops. One crystal shows a dislocation-offset, caused by pocket movement during the crystal growth. The effect is that the little portion atop looks like a top hat, being lifted up. Dimensions are for larger crystal, as ... |
| © Rob Lavinsky | Photo ID: 249648 View Count: 70 |
Stibiotantalite : Sb(Ta,Nb)O4, Schorl : [Na][Fe2+3][Al6][(OH)3|OH|(BO3)3|Si6O18], Elbaite : [Na][(Li,Al)3][Al6][(OH)3|OH|(BO3)3|Si6O18], Albite (Var: Cleavelandite) : Na[AlSi3O8] | |
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Lookout Mine (Lookout prospect; Upper Hercules; Hercules group), Ramona District, San Diego Co., California, USA A natural stibiotantalite crystal, two black tourmalines, and one dark green colored tourmaline crystal; from the Lookout mine, Hatfield Creek, Ramona, San Diego County, California, USA. From left, specimens measure approximately 42x31x37mm, 18x30x15mm, 41x15x15mm, and 41x20x17mm respectively. Produced by the San Diego Mining Company, circa ... |
| © 2004 SLR | Photo ID: 64125 View Count: 270 |
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