Fact Sheet for <b>Occurence 301 - 605 Langmyra 1</b>

					Norsk versjon
	THE NATURAL STONE DATABASE
	Occurence 301 - 605 Langmyra 1
	(Object Id: 15447) (Last updated: 08.06.2012)

Location

County:

Oslo

Municipality:

Oslo (301)

Map 1:50000:

Oslo (1914-4)

Map 1:250000:

Oslo

Coordinate system:

EU89-UTM Zone 32

East:

597209 m.

North:

6649390 m.

Longitude:

10.7413880

Latitude:

59.9703660

Show on map

Resource

	Resource Type:	Granite and other igneous rocks	Resource Subtype:	Syenite
			Brickstone(Y/N):	N

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Historical:

Yes , (Confirmed 24.sep.2004 by Leif Furuhaug)

Resources and production

	Activity:	Stone quarrying	Reserves:
	Operating method:	Open pit mining	Historical production:

Deposit rock

Lithology: Weathering colour:

Genesis: Form:

Main texture:

Main grain size: Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

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Igneous complex:

Group: Formation:

Information(s) in free text format

Description

Bruddveggen inn mot fjellryggen vest for bruddet er 2-3 m høy, men her er det ikke tatt ut mye stein. Bruddet dekker ikke mange m2. Bergarten er grefsensyenitt.

Location

En kommer til Langmyra ved å gå tursti rett østover fra parkeringsplassen sør for Sognsvann. Dette bruddet ligger vest for Langmyra, øst for en fjellrygg.

Photo(s) from the Deposit area:

Photo no. 1 showing Hovedbruddet"

Bibliography:

From NGU's Reference Archive:

Oxaal, John , 1916

Norsk granit

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.76;1-220 pages

Abstract:

This work is a report of granite and the granite industry in Norway. It contains a description of the various fields of granite and similar rocks from a scientific as well as from a technical and economical standpoint. The geological occurrence of the various rocks, their chemical and mineralogical composition, are thoruoughlyoughly treated, also the questions of practical interest, as the quality and other technical properties, further the problems of location and conditions for transport, conditions for quarrying and otherquestions of interest in the utilization of the various occurrences of granite. Granite: This chapter consideres first the mineralogical and chemical composition of the granite, and the various types of granite resulting from the varying composition; thereafter the most important structural types and how these are dependent on the geological appearance of the rock. Lakkolites and other froms assumed by granite masses when injected into the crust of the earth, are mentioned; some examples of beautifully formed lakkolites are also mentioned. The question of sheet structure and rift in the granite are of great importance in its utilization, and are of interest both practically and theoretically.

Name of Locality: Langmyra 2

(Object Id: 15449 605,01,00)

Location

County: Oslo Municipality: Oslo (301)

Map 1:50000: Oslo (1914-4) Map 1:250000: Oslo

Coordinate system: EU89-UTM Zone 32

East: 597119 m. North: 6649249 m.

Longitude: 10.7397110 Latitude: 59.9691300

Show on map

Resource

Resource Type: Granite and other igneous rocks Resource Subtype: Syenite

Brickstone(Y/N):

Importance

Historical: Yes , (Confirmed 24.sep.2004 by Leif Furuhaug)

Resources and production

Activity: Stone quarrying Reserves:

Operating method: Open pit mining Historical production:

Information(s) in free text format

Description

Det er brutt ut stein over et tilnærmet sirkelrundt område på 30-40 m i diameter, men avsenkningen er stort sett < 1 m.

Location

Dette bruddet ligger på en fjellkolle sørvest for Langmyra 1.

Photo(s) from the Deposit area:

Photo no. 1 showing Utbrutt blokk fra en fjellrygg"

	Lithology:		Weathering colour:
	Genesis:		Form:
	Main texture:

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex: