Per Adolf Geijer (born

7 May Events Pre-1600 * 351 – The Jewish revolt against Constantius Gallus breaks out after his arrival at Antioch. * 558 – In Constantinople, the dome of the Hagia Sophia collapses, twenty years after its construction. Justinian I imm ...

1886 in

Svealand Svealand (), or Swealand, is the historical core region of Sweden. It is located in south central Sweden and is one of three historical lands of Sweden, bounded to the north by Norrland and to the south by Götaland. Deep forests, Tiveden, Tyl� ...

, died

18 April Events Pre-1600 * 796 – King Æthelred I of Northumbria is murdered in Corbridge by a group led by his ealdormen, Ealdred and Wada. The ''patrician'' Osbald is crowned, but abdicates within 27 days. *1428 – Peace of Ferrara betwe ...

1976 Events January * January 3 – The International Covenant on Economic, Social and Cultural Rights enters into force. * January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea. * January 11 – The 1976 Phila ...

Danderyd Danderyd Municipality (''Danderyds kommun''; ) is a municipality north of Stockholm in Stockholm County in east central Sweden. It is one of the smallest municipalities of Sweden, but the most affluent. Its seat is located in Djursholm and it is ...

) was a Swedish

geologist A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes Earth and other terrestrial planets, as well as the processes that shape them. Geologists usually study geology, earth science, or geophysics, althou ...

mineralogist Mineralogy is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts. Specific studies within mineralogy include the proces ...

, and professor. He was a member of the

Geijer family Geijer () is a Swedish family. According to the tradition, it immigrated from Austria in the early 17th century. The family includes the noble A noble is a member of the nobility. Noble may also refer to: Places Antarctica * Noble Glacier, ...

(son of

Gottschalk Geijer Gottschalk or Godescalc (Old High German) is a male German name that can be translated literally as " servant of God". Latin forms include ''Godeschalcus'' and ''Godescalcus''. Given name * Godescalc of Benevento, 8th-century Lombard duke *Godescal ...

, grandson of Per Adolf Geijer and grandfather of Per Olof Nisser). Geijer received his

doctoral degree A doctorate (from Latin ''docere'', "to teach"), doctor's degree (from Latin ''doctor'', "teacher"), or doctoral degree is an academic degree awarded by universities and some other educational institutions, derived from the ancient formalism ''li ...

and was named as an associate professor of

petrography Petrography is a branch of petrology that focuses on detailed descriptions of rocks. Someone who studies petrography is called a petrographer. The mineral content and the textural relationships within the rock are described in detail. The classi ...

Stockholm University Stockholm University ( sv, Stockholms universitet) is a public research university in Stockholm, Sweden, founded as a college in 1878, with university status since 1960. With over 33,000 students at four different faculties: law, humanities, so ...

in 1910. He undertook a trip to

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

in 1913 to study mining operations there and in 1916 became a state geologist at the Swedish Geological Survey (SGU). He was professor of mineralogy and geology at the

Royal Institute of Technology The KTH Royal Institute of Technology ( sv, Kungliga Tekniska högskolan, lit=Royal Institute of Technology), abbreviated KTH, is a public research university in Stockholm, Sweden. KTH conducts research and education in engineering and technolo ...

from 1931 to 1941 and

director general A director general or director-general (plural: ''directors general'', ''directors-general'', ''director generals'' or ''director-generals'' ) or general director is a senior executive (government), executive officer, often the chief executive offi ...

and head of SGU from 1942 to 1951. His works dealt mainly with Sweden's

ore Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.Encyclopædia Britannica. "Ore". Encyclopædia Britannica Online. Retrieved 7 April 2 ...

s and the geological conditions under which they occur. His works deal with the ore fields at Kirunavaara,

Luossavaara Luossavaara (Northern Sami: ''Luossavárri'') is a mountain in Kiruna, Sweden. It is the site of a now-inactive iron ore mine formerly operated by the Swedish mining company LKAB. Today it has a ski lift and slope, as well as a hiking path calle ...

, Tuollavaara and in Falutrakten. Geijer was elected in 1934 as a member of the

Royal Swedish Academy of Engineering Sciences The Royal Swedish Academy of Engineering Sciences or ''Kungliga Ingenjörsvetenskapsakademien'' (IVA), founded on 24 October 1919 by King Gustaf V, is one of the royal academies in Sweden. The academy is an independent organisation, which promo ...

and in 1939 became a member of the

Royal Swedish Academy of Sciences The Royal Swedish Academy of Sciences ( sv, Kungliga Vetenskapsakademien) is one of the Swedish Royal Academies, royal academies of Sweden. Founded on 2 June 1739, it is an independent, non-governmental scientific organization that takes special ...

. He was awarded the

Brinell Medal The Brinell scale characterizes the indentation hardness of materials through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several definitions of hardness in materials science. History Proposed by Swe ...

in 1961 together with Nils H. Magnusson. The mineral

perite Perite is a mineral that has a general chemical formula of Lead, PbBismuth, BiOxygen, O2Chlorine, Cl. The name is given for Per_Geijer, Per Adolf Geijer, a Swedish people, Swedish economic geologist with the Geological Survey of Sweden, who discov ...

, discovered in Långban, Sweden in 1960, was named in his honor.

Sources

Geijer, Per
in ''

Nordisk familjebok ''Nordisk familjebok'' (, "Nordic Family Book") is a Swedish encyclopedia that was published in print from between 1876 and 1993, and that is now fully available in digital form via Project Runeberg at Linköping University. Despite their consi ...

'' (second edition supplement, 1923)
Geijer, Per
in ''

Vem är det ''Vem är det'', with the subtitle ''Svensk biografisk handbok'', is a Swedish " Who's Who" biographical reference publication which has been published in 46 editions since 1912. References External links''Vem är det''at Project Runeberg ...

1943''

Notes

{{DEFAULTSORT:Geijer, Per 20th-century Swedish geologists Swedish mineralogists Geological Survey of Sweden personnel Swedish civil servants

Per Per is a Latin preposition which means "through" or "for each", as in per capita. Per or PER may also refer to: Places * IOC country code for Peru * Pér, a village in Hungary * Chapman code for Perthshire, historic county in Scotland Math ...

See also

Sources

Notes