Mt. Nebo banded calcite
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Details: The Mt. Nebo deposit consists of reddish-orange and cream-colored banded calcite according to the Utah Geological Survey website. It says: "Geologic information: Although the rocks at this site are commonly called onyx (on’-iks) or onyx marble, they are not true onyx. True onyx is parallel-banded chalcedony, a cryptocrystalline (microscopic crystals) variety of quartz. The Mt. Nebo deposit consists of reddish-orange and cream-colored banded calcite. Calcite is composed of calcium carbonate (CaCO3). Banded calcite is formed when calcium carbonate precipitates (separates out) from a solution of dissolved calcium carbonate and ground water. The calcium carbonate is deposited within a large opening or fissure in the mother rock and parallel bands are created as additional calcium carbonate precipitates. The changes in the color banding are probably caused by slight changes in the chemical composition of ground water during precipitation. The Mt. Nebo banded calcite can be polished and used for decorative purposes, such as bookends."
Directions: Directions can be found at the Utah Geological Survey website. It says: "How to get there: Travel about 5 miles east of Nephi on State Highway 132 to the Mt. Nebo Scenic Loop intersection. Turn north (left) onto the Mt. Nebo road and travel approximately 3 miles until you reach the turnoff to the Mt. Nebo Scenic Loop. Stop and park in the open space on the west (left) side of the main road. Where to collect: Walk about 0.2 miles up the Mt. Nebo Scenic Loop road until you see faint tracks on the northwest (left side of road). Follow the trail uphill about 0.5 miles to the collecting site, a red and white knoll west (left) of the trail. Go around to the other side of this knoll for the best collecting. Numerous large and small rock samples litter the ground on the west side of the knoll. To obtain a sample from the outcrop you will need to remove it with a rock hammer or a hammer and chisel. Please remember to wear your safety glasses."
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GPS Coordinates (lat,long): ( 39°46'4.22"N, 111°42'33.96"W)
or (39.767838, -111.709433)
Google Map: (The GPS marker is supposed to be exact.)
Tags: mt. nebo banded calcite onyx nephi utah juab county
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