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Igneous rock with very large interlocked crystals
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
Pegmatite
Part of the valley of the North Toe River in North Carolina, US
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
Spruce_Pine_Mining_District
Group of phyllosilicate minerals
granites, pegmatites, and schists, and "books" (large individual crystals) of mica several feet across have been found in some pegmatites. Micas are
Mica
Variety of beryl
to other gems in the beryl family. Aquamarine mainly forms in granite pegmatites and hydrothermal veins, a process that takes millions of years and is
Aquamarine_(gem)
Deposit of unique minerals in Ukraine
The Volyn Deposit is a unique occurrence of chamber pegmatites located in Zhytomyr Oblast, Ukraine, near the urban-type settlement of Khoroshiv (formerly
Volyn_Deposit
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
Tin_Mountain_pegmatite
Yellow-green phosphate mineral
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
Brazilianite
Pink variety of quartz
high temperatures of 400–700 °C (752–1,292 °F) in the quartz cores of pegmatites. Rose quartz is commonly used in lapidary for carvings and as a semiprecious
Rose_quartz
Autonomous territory of Denmark
In southern Greenland, the Illimaussaq alkaline complex consists of pegmatites such as nepheline, syenites (especially kakortokite or naujaite) and sodalite
Greenland
Adit mine in New Mexico, US
The Harding Pegmatite Mine is a former adit mine that extracted lithium, tantalum, and beryllium from a Precambrian pegmatite sill. It ceased operations
Harding_Pegmatite_Mine
lithium, tin Pilbara Craton Archean Environment: magmatic, group: pegmatite, type: LCT pegmatite Pilgangoora (Altura) Pilgangoora (Altura Mining) Western Australia
Lithium_mining_in_Australia
Crystal-lined irregular cavities in rocks
in granitic pegmatites, and also in a variety of igneous rocks. The central portions of pegmatites are often miarolitic as the pegmatite dike crystallizes
Miarolitic_cavity
mineralogist Heikki Allan Väyrynen of Helsinki, Finland. It occurs in pegmatites as an alteration of beryl and triphylite. It occurs in association with
Väyrynenite
Geologist - influential actor in the study of pegmatite geology
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
Margaret_B._Fuller_Boos
Lithostratigraphic unit in the Grand Canyon, Arizona
Vishnu Basement Rocks contain Early Paleoproterozoic granite, granitic pegmatite, aplite, and granodiorite that have intruded these metamorphic rocks,
Vishnu_Basement_Rocks
Phyllosilicate mineral series in the trioctahedral mica group
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
Lepidolite
Mineral or gemstone of beryllium aluminate
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
Chrysoberyl
Rare mineral
from Mont Saint-Hilaire. The only reported occurrence is in an alkalic pegmatite dike in an intrusive gabbro-nepheline syenite. List of minerals List of
Thomasclarkite-(Y)
Lithium mine in North Carolina
million tonnes of lithium. In 2017 it was reported that the Kings Mountain pegmatite district had 5.9 million metric tons of lithium. The first mining operations
Kings_Mountain_Mine
Green gemstone, a beryl variety
Brazilian emerald (grass-green variety of the mineral beryl) in a quartz-pegmatite matrix with typical hexagonal, prismatic crystals
Emerald
Phosphate mineral
crystals; occurs in the Barker pegmatite (formerly Ferguson pegmatite), east of Keystone, South Dakota, and in the Palermo pegmatite, North Groton, New Hampshire
Sinkankasite
Mica mineral in the biotite subgroup
formula KFe2+2Al(Al2Si2)O10(F,OH)2. The mineral occurs in nepheline syenite pegmatites and granite and aplite greisens. It is associated with microcline and
Siderophyllite
Fine-grained intrusive igneous rock type similar to granite
aplites form in close association with pegmatites, which are otherwise uncommon in granites. These aplite-pegmatite sheet complexes may show fine-scale banding
Aplite
Geology museum in Bethel, Maine
granitic pegmatites at the Maine Pegmatite Workshop. The Maine Pegmatite Workshop curriculum includes: Introduction to the nature of pegmatites Introductory
Maine_Mineral_and_Gem_Museum
Canadian mineral extraction company
property is host to a large "complex-type" pegmatite; it is the fourth example in the world of a rare-metal pegmatite with the size required to be of major
Avalon_Advanced_Materials
Mountain in Ross Dependency, Antarctica
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
Medina_Peaks
Nesosilicate, manganese aluminium garnet species
Germany, the type locality of the mineral. It occurs most often in granite pegmatite and allied rock types and in certain low-grade metamorphic phyllites.
Spessartine
Discredited gadolinite mineral
Typically appearing as minute, purplish-lavender rosettes in granitic pegmatites, it was first identified at the José Pinto quarry in 1986 in Jaguaraçu
Minasgeraisite-(Y)
from alluvium near bismuth-bearing pegmatites in South Africa. It has been found in association with granite pegmatite and in greisen. Associated minerals
Bismoclite
Ukraine, is a significant lithium-bearing resource primarily hosted within pegmatite formations. Discovered in the mid-20th century during regional geological
Shevchenko_deposit
Highly altered granitic rock or pegmatite
Greisen is a highly altered granitic rock or pegmatite, usually composed predominantly of quartz and micas (mostly muscovite). Greisen is formed by self-generated
Greisen
Biggest glacial boulder in Estonia
of North Europe. Geologically the boulder had originally formed as a pegmatite-type intrusive magmatic rock. Height: 7.6 m Circumference: 49.6 (measured
Ehalkivi
Lake in Manitoba, Canada
is an active producer of caesium, tantalum and spodumene from a large pegmatite ore body. List of lakes of Manitoba "Structural geology of the Bernic
Bernic_Lake
Phosphate mineral
aluminium, phosphate, fluoride and hydroxide. The mineral occurs in pegmatite deposits and is easily mistaken for albite and other feldspars. Its density
Amblygonite
Rock or sediment with valuable metals, minerals and elements
types: Magmatic deposits are ones which originate directly from magma Pegmatites are very coarse grained, igneous rocks. They crystallize slowly at great
Ore
Phyllosilicate mineral in the dioctahedral mica group
type of muscovite. Muscovite is the most common mica, found in granites, pegmatites, gneisses, and schists, and as a contact metamorphic rock or as a secondary
Muscovite
Igneous rock
Glimmerite (biotite - annite w/magnetite), Newark, DE, pegmatite /schist contact zone
Glimmerite
Group of hydrous strontium carbonate minerals
Ancylite was first described in 1899 for an occurrence in the Narsarsuk pegmatite in west Greenland and named from the Ancient Greek: ἀγκύλος for curved
Ancylite
Mineral
microlite group belongs to a large pyrochlore supergroup that occurs in pegmatites and constitutes an ore of tantalum. It has a Mohs hardness of 5.5 and
Microlite
The James Bay project is a proposed lithium pegmatite mine in Canada. The project is located in eastern Canada in Quebec. The James Bay mine has reserves
James_Bay_project
Underground mine in Manitoba, Canada
concentrated solution of caesium formate has a density of 2.3 g/cm3. The pegmatite ore body now mined by the Tanco Mine was discovered in the late 1920s
Tanco_Mine
Mountain in the U.S. state of Colorado
Retrieved July 1, 2024. "Centennial Cone pegmatite (K. L. Green Ranch), Centennial Cone, Clear Creek pegmatite Province, Jefferson County, Colorado, USA"
Centennial_Cone
Nesosilicate mineral
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
Phenakite
Geological fault in Venezuela
Quadrangle Lithium Triangle Maricunga Gold Belt Orinoco Mining Arc Pampean Pegmatite Province Volcanism Volcanic provinces Andean North Central South Austral
Boconó_Fault
Calcium aluminium basic phosphate mineral
mineral is found in laterite and in alteration products of phosphate rich pegmatites. Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical
Crandallite
Silicate mineral
(2023-12-08). "Connoisseur's Choice: Topaz from Granite Pegmatites: Limoeiro Mine, Virgem da Lapa, Araçuaí Pegmatite District, Minas Gerais, Brazil". Rocks & Minerals
Topaz
Mineral group
concentrations of tantalum and iron. Manganocolumbite is often found in pegmatites, course-grained igneous rocks. The iron-rich member of the columbite group
Columbite
Chemical element with atomic number 21 (Sc)
Norwegian): 14–23. von Knorring, O.; Condliffe, E. (1987). "Mineralized pegmatites in Africa". Geological Journal. 22 (S2): 253. Bibcode:1987GeolJ..22S.253V
Scandium
Aluminosilicate mineral
typically blue aluminosilicate mineral, found in aluminium-rich metamorphic pegmatites and sedimentary rock. It is the high pressure polymorph of andalusite
Kyanite
Fossilized microorganisms from Ukraine
samples of Volyn biota were found in samples from miarolitic pegmatites ("chamber pegmatites") collected from the Korosten Pluton [uk] of the Ukrainian
Volyn_biota
containing niobium and tantalum. It was discovered in 1986 in kaolinized pegmatite, i.e. weathered to clay, in Zimbabwe. Warr, L.N. (2021). "IMA–CNMNC approved
Zimbabweite
The southwest shield of the East European craton
approximately 1,000 km (620 mi) long and up to 250 km (160 mi) wide. It is a pegmatite geologic province which can be divided into the following megastructures:
Ukrainian_Shield
Complex hydrated phosphate mineral
alongside quartz minerals. It is found in the crevices of Lavra da Ilha pegmatite, near Taquaral, in northeastern Minas Gerais, Brazil. Zanazziite is named
Zanazziite
How the various types of mineral deposits form within the Earth's crust
majority of rare-earth elements, tantalum, and lithium are found within pegmatite. Ore genesis theories for these ores are wide and varied, but most involve
Ore_genesis
Rare earth oxide mineral
yellow brown earthy rind. Samarskite occurs in rare earth bearing granite pegmatites with other rare minerals. It occurs in association with columbite, zircon
Samarskite-(Y)
Highest mountain in Colorado, United States
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
Mount_Elbert
Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Granitic pegmatite (2023) Maryland Massachusetts[D] Michigan Minnesota Mississippi Mississippi
List of U.S. state minerals, rocks, stones and gemstones
List_of_U.S._state_minerals,_rocks,_stones_and_gemstones
Yellow brown borate mineral
It is a late stage hydrothermal mineral and occurs rarely in granite pegmatites in miarolitic cavities. Tusionite was named for the location where the
Tusionite
Coastal foothills in Ross Dependency, Antarctica
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
Duncan_Mountains
is an oxide mineral first discovered in the Fonte del Prete vein of a pegmatite vein in San Piero in Campo, Elba Island, Tuscany, Italy. Uranopolycrase
Uranopolycrase
Former quarry and holiday village in UK
Carreg yr Imbill is the remains of a large dolerite with pegmatite pods and quarry at Pwllheli, Gwynedd, Wales. The dolerite was mined by the Liverpool
Carreg_yr_Imbill
Phyllosilicate mineral
It was first described in 1893 for an occurrence in the Narssârssuk pegmatite of West Greenland. It is also found within natrolite veins in glaucophane
Neptunite
Intruded into the greenstone are granitic pegmatites containing rare earth minerals such as spodumene. These pegmatite were intruded just prior to and/or during
Sandawana_mines
Yellowish or greenish green mineral
is induced by irradiation and is fugitive. Deposits occur in granite pegmatite. Anonymous (1885): Taylorsville And Aleck, Their Resources and Advantages
Hiddenite
Cyclosilicate, mineral
in association with lepidolite, microcline, and spodumene in granite pegmatites; with andalusite and biotite in schist; and with molybdenite and cassiterite
Elbaite
chemical formula NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7H2O, from alkaline pegmatites. It belongs to the labuntsovite group. The mineral crystallizes in the
Alsakharovite-Zn
Oxide mineral
nature. Usually off-white to pale pink in color. It occurs in granitic pegmatites and was first described for an occurrence in San Diego County, California
Rynersonite
Tantalum oxide mineral
described in 1983 for an occurrence in a pegmatite in the Kola peninsula, Russia. It has also been reported from a pegmatite complex in Florence County, Wisconsin
Tantite
Uranyl phosphate mineral
1879 by Frederick Augustus Genth, from an occurrence in the Flat Rock pegmatite in Mitchell County, North Carolina, US. Wikimedia Commons has media related
Phosphuranylite
Igneous rock composed of crystals visible to the naked eye
Gabbro Diorite Granodiorite Tonalite Syenite Granite Peridotite Pyroxenite Pegmatite Porphyritic Monroe, James Stewart; Wicander, Reed; Hazlett, Richard W
Phanerite
occurrence in the Rode Ranch pegmatite on Baringer Hill, Llano County, Texas. It has also been reported from the Suishouyama pegmatite on Honshū, Japan, and
Yttrialite
Sodium-rich member of the amphibole group of silicate minerals
highly alkali granites, syenites, rarely in felsic volcanics, granite pegmatites and schist. It occurs in banded iron formations as the asbestiform variety
Riebeckite
Village in Gilgit-Baltistan, Pakistan
Skardu City. The village lies within the Shingus pegmatite region, one of Pakistan’s most extensive pegmatite zones. This area holds significant geological
Shingus
Billwiseite is a very rare oxide mineral found at the pegmatite commonly referred to as "Stak Nala" located within a few hundred yards from the village
Billwiseite
Gemstone: beryllium aluminium silicate
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
Beryl
Rare zinc arsenate mineral
oxidized zone of arsenic bearing zinc deposits and occurs rarely in granite pegmatite. Associated minerals include: adamite, paradamite, köttigite, scorodite
Legrandite
Chemical element with atomic number 37 (Rb)
with elevated Rb/Sr ratios. The highest ratios (10 or more) occur in pegmatites. If the initial amount of Sr is known or can be extrapolated, then the
Rubidium
Phyllosilicate mineral
Ussingite Ussingite from Shkatulka pegmatite, Umbozero mine (Umbozerskii mine), Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern
Ussingite
about 22 miles (35 km) northeast of the town of Llano. It consists of a pegmatite, lies near the eastern edge of the Central Mineral Region in the Texas
Barringer_Hill
Pyroxene, inosilicate mineral rich in lithium
refined for use in industry. Spodumene occurs in lithium-rich granite pegmatites and aplites. Associated minerals include quartz, albite, petalite, eucryptite
Spodumene
River in Karnataka, India
mica and small garnets. Sienites also occur, as fragments of a beautiful pegmatite with flesh coloured feldspar are seen in the beds of rivulets. The Netravati
Netravati_River
Szklary village near Ząbkowice Śląskie in Poland. They occur in a unique pegmatite. Nioboholtite and schiavinatoite are both minerals with essential niobium
Nioboholtite
Halide mineral
crystal. It occurs in nepheline syenite intrusives and in nepheline syenite pegmatites. It occurs associated with aegirine, sodalite, nepheline, neptunite, lamprophyllite
Villiaumite
Chemical element with atomic number 3 (Li)
spodumene hard-rock. The two largest pegmatites (known as the Carriere de l'Este Pegmatite and the Roche Dure Pegmatite) are each of similar size or larger
Lithium
Mountain with U.S. presidential sculptures
schist rocks during the Proterozoic, 1.6 billion years ago. Coarse grained pegmatite dikes are associated with the granite intrusion of Black Elk Peak and
Mount_Rushmore
Moonstone variety
tones. The most famous deposits of this gem are in the north, in the pegmatites of the Kola Peninsula and Karelia. Belomorite is a popular jewelry and
Belomorite
Blue mineral
cavities in granite, in alpine veins and in scandium bearing granitic pegmatites. It occurs associated with quartz, orthoclase, muscovite, laumontite,
Bazzite
Island in Finnmark, Norway
generations and an array of pegmatite dykes whose widths range from 10 cm (3.9 in) to over 100 m (330 ft). Among the pegmatites are granite, syenite, nepheline
Seiland
Lithium mine in the Northern Territory, Australia
comprises 500 km2 (190 sq mi) of leases, covering the Bynoe pegmatite field (BPF) and several pegmatites near Darwin. Specifically, it encompasses the five ore
Finniss_Lithium_mine
Large sculptures carved into a material that remain at location
Rushmore, South Dakota – granite Crazy Horse Memorial, South Dakota – pegmatite granite (work in progress) Stone Mountain, Georgia – granite Madara Rider
List of colossal sculptures in situ
List_of_colossal_sculptures_in_situ
Geological formation in Colorado, United States
feldspar. In some places, the cooling process lasted long enough to form pegmatites that contain large, pure crystals of various minerals. The chemistry of
Pikes_Peak_granite
Mineral species
orange-red and pink. Recovered from miarolitic cavities in the granitic pegmatite fields of Fianarantsoa province, southern Madagascar, the pezzottaite
Pezzottaite
Phosphate mineral
Ca9(MgFe)(PO4)6PO3OH. It is a relatively rare mineral but is found in granitic pegmatites, phosphate rock deposits, guano caves and in chondrite meteorites. It
Whitlockite
Village in Sweden
quartz and feldspar are part of a pegmatite dyke that has a NNE-SSW orientation and a dip of 60° to the west. The pegmatite dyke include sections of aplite
Ytterby
Igneous rock-forming feldspar mineral
It is a potassium-rich alkali feldspar. It is common in granite and pegmatites. Microcline forms during slow cooling of orthoclase. Sanidine is a polymorph
Microcline
Sodium amphibole mineral
occurring in nepheline syenite intrusions and agpaitic (peralkaline) pegmatites and granites as the Golden Horn batholith in Okanogan County, Washington
Arfvedsonite
Natural hexaniobate mineral
special type of octahedron: Lindqvist ion. Peterandresenite was found in a pegmatite of the Larvik complex in Norway. It is somewhat similar to other unique
Peterandresenite
same year and continued again from 1931 to 1934. The mined deposit is a pegmatite with a length of 45 m and a maximum width of 10 m. It contains amazonite
Skuleboda
Manganese phosphate mineral
mineral occurring in granite pegmatites. At the type locality it occurs in a zone of altered triphylite, LiMn2+PO4, in pegmatite. Typically occurs very late
Hureaulite
Nesosilicate mineral
beryllium minerals. It is a product of the decomposition of beryl in pegmatites. Euclase occurs mostly in association with minerals like: quartz, muscovite
Euclase
PEGMATITE
PEGMATITE
PEGMATITE
PEGMATITE
Girl/Female
Indian
Bhagwad Geeta
Girl/Female
Tamil
Nirmada | நிரà¯à®®à®³à®¾
Goddess Durga
Boy/Male
Arabic, Muslim
Support of the State
Girl/Female
Arabic, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Muslim
God's Gift; God's Blessing; God's Friend
Boy/Male
Hindu, Indian
Name of God
Boy/Male
Tamil
Vibuthim | விபà¯à®¤à®¿à®®
Derived from Sanskrit - powerful & sacred ash with healing powers created by Sathya Sai baba
Boy/Male
Indian, Sanskrit
Lord of the World
Girl/Female
Hindu, Indian, Marathi
Ideal
Boy/Male
Muslim
Immaculate
Girl/Female
British, English
Beaver-stream
PEGMATITE
PEGMATITE
PEGMATITE
PEGMATITE
PEGMATITE
a.
Of, pertaining to, or resembling, pegmatite; as, the pegmatic structure of certain rocks resembling graphic granite.
n.
More generally, a coarse granite occurring as vein material in other rocks.
a.
Resembling pegmatite; pegmatic.
n.
A rock showing under the microscope the structure of a graphic granite (pegmatite).
n.
Graphic granite. See under Granite.