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Forbach Granite (German: Forbachgranit), also called Raumünzach Granite (Raumünzach-Granit), is a type of granite rock that occurs in the Northern Black Forest. It is part of the Northern Black Forest's granitic massif, to which Bühlertal granite and Wildbad granite also belong. Forbach granite predominantly outcrops in the counties of Calw ...
The collecting area ranges from the Northern slopes of Camerons Cone to Specimen Rock on the south. Much of this area is National Forest. Like all the other Pikes Peak collecting areas, Crystal Park contains the usual smoky quartz and amazonite crystals. In addition, topaz is more abundant here than in the Gold Camp road area. Typical topaz crystal
The Black Forest (German: Schwarzwald [ˈʃvaʁt͡svalt] ⓘ) is a large forested mountain range in the state of Baden-Württemberg in southwest Germany, bounded by the Rhine Valley to the west and south and close to the borders with France and Switzerland. [1] It is the source of the Danube and Neckar rivers.
Precious Gemstone: Virgin Valley black fire opal (1987) Semiprecious Gemstone: Nevada turquoise (1987) New Hampshire [48] Beryl (1985) Granite (1985); New Hampshire's nickname is the Granite State: Smoky quartz (1985) New Jersey [49] Franklinite [50] New Mexico [51] Turquoise (1967) New York [52] Garnet (1969) North Carolina [53] Gold (2011 ...
The Laramide Orogeny (70-80 Ma) formed the preexisting strata into the elongate dome of the Black Hills without causing major deformation to the rocks. [5] The Tin Mountain pegmatite, an offshoot of the Harney Peak Granite, intrudes into both the Mayo Formation, an early Proterozoic quartz-mica schist, as well as a small amphibolite unit. [2]
Greisens are usually variably altered rocks, grading from coarse, crystalline granite, commonly vuggy with miarolitic cavities, through to quartz and muscovite rich rocks, which may be locally rich in topaz, tourmaline, cassiterite, fluorite, beryl, wolframite, siderite, molybdenite and other sulfide minerals, and other accessory minerals. They ...
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