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Gore Mountain Garnet, found in the Adirondack Mountains in New York, contains the world's largest garnets. [1] [2] The rock that holds these garnets, garnet amphibolite, is sometimes referred to as 'black ore' or 'dark ore.' [1] [3] This rock formation formed during metamorphism during the Ottawan phase of the Grenvillian orogeny, and extremely high temperatures combined with introduction of ...
Garnet aggregate from the Barton mines. In 1878, Henry Hudson Barton began mining garnet at Gore Mountain for use as sandpaper abrasives, later purchasing the mountain and founding Barton Mines. The company relocated its mining operation to nearby Ruby Mountain in 1982. [4] [5] The mine operated until the early 1980s.
Gore Mountain garnets are unique in many respects, and considerable effort has been made to determine the timing of garnet growth. The first dating was that of Basu et al. (1989), who used plagioclase-hornblende-garnet to produce a Sm/Nd isochron that yielded an age of 1059 ± 19 Ma.
magnetite and hematite, formerly mined at the Benson Mines, [15] Lyon Mountain, Mineville, Tahawus, and Witherbee. graphite, mined near Hague and Ticonderoga. garnet, mined at the Barton Mine, north of Gore Mountain. anorthosite, visible in road cuts on the New York State Route 3 between Saranac Lake and Tupper Lake. [16] marble
The Garnet Range, highest point Old Baldy Mountain, elevation 7,511 feet (2,289 m), [1] is a mountain range northeast of Drummond, Montana in Powell County, Montana.. A popular historic site, Garnet Ghost Town, is in the Garnet Range.
This is a list of mountain ranges in the state of Montana. Montana is the fourth largest state in the United States and is well known for its mountains. The name "Montana" is Spanish for "Mountain". Representative James Mitchell Ashley (R-Ohio), suggested the name when legislation organizing the territory was passed by the United States ...
A similar green grossular garnet can be found in the Wah Wah mountain range in Utah. [ 8 ] Grossular is known by many other names, and also some misnomers ; [ 9 ] colophonite – coarse granules of garnet [ 10 ] (was later identified as a variety of andradite ), ernite , gooseberry-garnet – light green colored and translucent, [ 11 ...
The amber mineral is analcime, the pale mineral is sanidine, and the small black minerals are melanite garnet. The specimen is about 17 cm (6.7 in) in length. Photo by P. Glombick, courtesy of Alberta Geological Survey. Crystals of melanite, a variety of andradite garnet. Pyroclastic rocks of the Crowsnest Formation.