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"The highest concentration of boulder problems in the Bay Area is side by side with great sport and trad crags. All this combined with legitimate access from one easily located parking area makes it the most popular all around rock climbing venue in the Bay Area."
Opals too thin to produce a "natural" opal may be combined with other materials to form "composite" gems. An opal doublet consists of a relatively thin layer of precious opal, backed by a layer of dark-colored material, most commonly ironstone, dark or black common opal (potch), onyx, or obsidian. The darker backing emphasizes the play of color ...
Edoylerite is a rare mineral, as it has only been found at one locality, the Clear Creek claim in San Benito County, California near the Clear Creek mine. [2] At the edoylerite locality, the host hock is composed of quartz, chalcedony, opal, ferroan magnesite, dolomite, goethite, and minor chlorite. In spite of a considerable search, only ...
Meet the "Virgin Rainbow" – perhaps the finest and certainly the most expensive opal on record. It literally glows in the dark. In fact, as it gets darker around the opal, the opal appears ...
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The Buttermilks, or Buttermilk Country, is a well-known bouldering destination near Bishop, California. It comprises the western edge of the Owens Valley, in the eastern foothills of the Sierra Nevada. [2] Buttermilk Country is renowned for its large "highball" boulders, made of quartz monzonite. [3]
The Mandala is a 6-metre (20 ft) high granite bouldering route in the Buttermilks, a popular bouldering area near Bishop, California.Considered a "next generation" problem in the 1970s, the route was first solved by American climber Chris Sharma in February 2000.
The best quality jade is only accessible to divers. They are permitted to use lift bags with a combined capacity of not more than 200 pounds. On rare occasions, waves can deposit pieces on the shore. [7] Four kinds of jade can be found in Jade Cove: Green is the most common type. Rarer types include Vulcan, Blue, and Botryoidal (Bubble or Grape ...
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