Gormanite is a

phosphate mineral Phosphate minerals are minerals that contain the tetrahedrally coordinated phosphate () anion, sometimes with arsenate () and vanadate () substitutions, along with chloride (Cl−), fluoride (F−), and hydroxide (OH−) anions, that also fit in ...

with the formula . It was named after the

University of Toronto The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by ...

professor Donald Herbert Gorman (1922–2020).

Occurrence

It was first described in 1981 for occurrences in Rapid Creek and Big Fish River in the Dawson Mining District,

Yukon Territory Yukon () is a territory of Canada, bordering British Columbia to the south, the Northwest Territories to the east, the Beaufort Sea to the north, and the U.S. state of Alaska to the west. It is Canada’s westernmost territory and the smallest ...

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

. At the type localities it occurs as

veins Veins () are blood vessels in the circulatory system of humans and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are those of the pulmonary and fetal c ...

in iron phosphate nodules. In the

Bisbee, Arizona Bisbee is a city in and the county seat of Cochise County, Arizona, Cochise County in southeastern Arizona, United States. It is southeast of Tucson, Arizona, Tucson and north of the Mexican border. According to the 2020 United States census, ...

occurrence, it occurs as large crystals within fractures in a

tonalite Tonalite is an igneous rock, igneous, plutonic (Intrusive rock, intrusive) rock (geology), rock, of felsic composition, with phaneritic (coarse-grained) texture. Feldspar is present as plagioclase (typically oligoclase or andesine) with alkali fe ...

intrusive. It has also been reported from near Newport,

Sullivan County, New Hampshire Sullivan County is a County (United States), county in the U.S. state of New Hampshire. As of the 2020 United States census, 2020 census, the population was 43,063, making it the second-least populous county in New Hampshire. Its county seat i ...

, and the Charles Davis

pegmatite A pegmatite is an igneous rock showing a very coarse texture, with large interlocking crystals usually greater in size than and sometimes greater than . Most pegmatites are composed of quartz, feldspar, and mica, having a similar silicic c ...

, Groton,

Grafton County, New Hampshire Grafton County is a County (United States), county in the U.S. state of New Hampshire. As of the 2020 United States census, 2020 census, the population was 91,118. Its county seat is the town of Haverhill, New Hampshire, Haverhill. In 1972, the ...

. It also has been reported from the Tsaobismund pegmatite, south of

Karibib Karibib () is a town in the Erongo Region of western Namibia. It has 8,434 inhabitants. Karibib is the district capital of the Karibib Constituency, Karibib electoral constituency. It is situated on the Khan River, halfway between Windhoek and S ...

Namibia Namibia, officially the Republic of Namibia, is a country on the west coast of Southern Africa. Its borders include the Atlantic Ocean to the west, Angola and Zambia to the north, Botswana to the east and South Africa to the south; in the no ...

References

External links

OpticalMineralogy.org
Aluminium minerals Iron(II) minerals Magnesium minerals Phosphate minerals Triclinic minerals Minerals in space group 1 Dihydrate minerals Minerals described in 1981 {{phosphate-mineral-stub