A pegmatite is an igneous rock showing a very coarse texture, with large interlocking crystals usually greater in size than 1 cm (0.4 in) and sometimes...

the eastern edge by the Blue Ridge Front. The pegmatites intruded into the Ashe Formation. The pegmatites and country rock are part of the Spruce Pine...

The Tin Mountain pegmatite is an igneous intrusion located in the southern Black Hills, South Dakota. It is a part of the Harney Peak Granite dome that...

The Harding Pegmatite Mine is a former adit mine that extracted lithium, tantalum, and beryllium from a Precambrian pegmatite sill. It ceased operations...

exhibits—all designed to inspire visitors about Maine's geologic history, pegmatite mining, and our planet's place in the solar system. The museum was formed...

granites, pegmatites, and schists, and "books" (large individual crystals) of mica several feet across have been found in some pegmatites. Micas are...

visited the point and gave the name because of the abundance of the rock Pegmatite. 84°56′S 166°56′W / 84.933°S 166.933°W / -84.933; -166.933. A Y-shaped...

possesses a hexagonal crystal system. Aquamarine mainly forms in granite pegmatites and hydrothermal veins, and it is a very lengthy process that can take...

the Ross Ice Shelf. From the south, features include Patterson Peak, Pegmatite Peak, Feeney Peak, Feeney Col and Hidden Col. Along the Ross Ice Shelf...

photosensitive and subject to fading. The first crystals were found in a pegmatite found near Rumford, Maine, US, and in Minas Gerais, Brazil. The crystals...

Lithium, Tin Pilbara Craton Archean Environment: Magmatic, Group: Pegmatite, Type: LCT pegmatite Pilgangoora (Altura) Pilgangoora (Altura Mining) Western Australia...

(2023-12-08). "Connoisseur's Choice: Topaz from Granite Pegmatites: Limoeiro Mine, Virgem da Lapa, Araçuaí Pegmatite District, Minas Gerais, Brazil". Rocks & Minerals...

minerals; this is called a pegmatite. The high water content of the magma made it possible for the crystals to grow quickly, so pegmatite crystals are often quite...

In southern Greenland, the Illimaussaq alkaline complex consists of pegmatites such as nepheline, syenites (especially kakortokite or naujaite) and sodalite...

Brazilian emerald (grass-green variety of the mineral beryl) in a quartz-pegmatite matrix with typical hexagonal, prismatic crystals....

Lepidolite is found with other lithium-bearing minerals, such as spodumene, in pegmatite bodies. It has also been found in high-temperature quartz veins, greisens...

Western Cape Sweden: Skuleboda mine, Västra Götaland County: found in pegmatite United States: Colorado: Deer Trail, Arapahoe County:233 Custer County:234...

noted in beryl dissolution cavities at the Noumas II Pegmatite, part of the Orange River pegmatite belt in the Northern Cape of South Africa. Large crystals...

Retrieved July 1, 2024. "Centennial Cone pegmatite (K. L. Green Ranch), Centennial Cone, Clear Creek pegmatite Province, Jefferson County, Colorado, USA"...

Whoopie pie Fossil Pertica quadrifaria Gemstone Tourmaline Rock Granitic pegmatite Ship Bowdoin Soil Chesuncook soil State route marker State quarter Released...

commonly found in phosphate-rich pegmatites. It occurs in the form of perfect crystals grouped in druses, in pegmatites, and is often of precious-stone...

is widely distributed in nature. It is found most commonly in granitic pegmatites, but also occurs in mica schists, such as those of the Ural Mountains...

aluminium, phosphate, fluoride and hydroxide. The mineral occurs in pegmatite deposits and is easily mistaken for albite and other feldspars. Its density...

orange-red and pink. Recovered from miarolitic cavities in the granitic pegmatite fields of Fianarantsoa province, southern Madagascar, the pezzottaite...

of these are concentrated in exceptionally coarse-grained rocks called pegmatites that are typically found in dikes and veins near larger igneous masses...

world in zoned pegmatites, associated with the more commercially important lithium minerals, lepidolite and petalite. Within the pegmatites, the large grain...

influential actor in the study of pegmatite geology. Although she did not begin her career in the study of pegmatite, it became her niche as her career...

Rock texture Name of felsic rock Pegmatitic Granite pegmatite Coarse-grained (phaneritic) Granite Coarse-grained and porphyritic Porphyritic granite Fine-grained...

aplites form in close association with pegmatites, which are otherwise uncommon in granites. These aplite-pegmatite sheet complexes may show fine-scale banding...

1.7 billion years old. There are various igneous intrusions including pegmatite, as well as bands of gneiss and schist. Unlike mountains of similar altitude...