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K Feldspar from
Osumilite-bearing granulite, Vikeså, Bjerkreim, Rogaland, Norway


Locality type:Outcrop
Classification
Species:'K Feldspar' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view K Feldspar data
Locality Data:Click here to view Osumilite-bearing granulite, Vikeså, Bjerkreim, Rogaland, Norway
Data Identifiers
Mindat Occurrence Record ID:1289234
Long-form Identifier:1:3:1289234:3
GUID (UUID V4):3eb2fdb8-a6ca-461e-8974-2d22af41fe8d
Nearest other occurrences of K Feldspar
14.9km (9.2 miles) Sapphirine locality, Ivesdalsfjellet, Vikeså, Bjerkreim, Rogaland, Norway
31.3km (19.5 miles) Storaberget, Forus, Stavanger, Rogaland, Norway
34.8km (21.6 miles) Almgjotheii, Flatestøl, Lund, Rogaland, Norway
65.8km (40.9 miles) Feda, Kvinesdal, Agder, Norway
86.0km (53.5 miles) Rudjord Quarry, Lyngdal, Agder, Norway
90.2km (56.0 miles) Eitland Feldspar Quarry, Austad, Lyngdal, Agder, Norway
95.6km (59.4 miles) Kalvaland, Vindafjord, Rogaland, Norway
97.3km (60.5 miles) Fjellheim, Vindafjord, Rogaland, Norway
References
Reference Search (possible matching items)
Journal (article/letter/editorial)
The sample, an osumilite-bearing ultra-high-temperature granulite from Rogaland, Norway, is characterized...as cheralite component), (2) secondary sulphate-bearing domains (SO2 >0.05 wt%, partly clouded with solid...The stability of sulphide, sulphate, and other S-bearing minerals depends on pressure (P), temperature (T)...Clermont‑Ferrand, France 4 Geological Survey of Norway, 7491 Trondheim, Norway 5 Centre de micro‑caractérisation...constrained episode of sulphur release occurs in the granulite facies, usually in the presence of a silicate
Journal (article/letter/editorial)
Petrological Sciences, K. Sajeev and Y.Volume Osanai99, page 320 ─ 327, 2004 Special Issue Osumilite and spinel...Implications for UHT conditions and retrograde P − T path K. SAJEEV* and Yasuhito OSANAI** * Basic Science Research...occurrence of osumilite as fine isolated inclusions in garnet porphyroblasts from a granulite facies rock...sillimanite − biotite − K − feldspar assemblage as well as cordierite − K − feldspar − quartz assemblage...950°C at around 7 kbar pressure, on the basis of osumilite stability in KFMASH system. The cooling and decompression
Report (chapter)
mol%), CH4 (,0.3 mol%), and H2O (,0.1 mol%). CH4-bearing fluid associated with sapphirine granulites suggests...from fluid inclusions in magnetite-bearing high-f O2 garnet granulite. The range of CO2 isochores computed...(e.g. Harley 1985, 1998b; Osanai et al. 1999), osumilite (e.g. Ellis 1980; Ellis et al. 1980; Grew 1982)...and From: SATISH -K UMAR , M., MOTOYOSHI , Y., OSANAI , Y., HIROI , Y. & SHIRAISHI , K. (eds) Geodynamic...reported that the transition from amphibolite to granulite facies is associated with a change from H2O-rich
Journal (article/letter/editorial)
American Mineralogist, Volume 61, pages 29-37, 1976 Osumilite of deep-seated origin in the contact aureoleof...apparent: Al3+3Fe3+; \zlgz+;p.z+' Na+--K+; Sia+* (Mg,Fe)'+=2(Al,Fef+; and (Na,K)+ + (Al.Fe)or--D + si4+. Prior...experimental and natural evidencehas indicated that osumilite is formed only at very low pressuresand probably... the osumilite formed at Pao'"1- 5 kbar and I: 700'-900'C, but Psp ( We conclude that osumilite is stable...Introduction N a t u r a l o s u m i l i t e ,! r x ( K , N a , B a , C a ) x I I ( M g , F e ' + , Mn)vrl(Al
Journal (article/letter/editorial)
biotite + orthopyroxene + cordierite + quartz + K − feldspar + plagioclase ± sillimanite, to which the latest...from a ternary feldspar geothermometer using antiperthitic feldspars in leucocratic granulite (920 − 980°C)...980°C), Al solubility in orthopyroxene in pelitic granulite (970 − 1020°C), and a revised garnet − orthopyroxene...of southern Africa is a classic example of a granulite − facies metamorphic complex (Mason, 1973) formed...past two decades as one of the oldest regional granulite terranes in the world (ca. 2.7 Ga metamorphic
Report (chapter)
carried out by using reliable approaches such as feldspar thermometry, alumina content of orthopyroxene...the From: SATISH -K UMAR , M., MOTOYOSHI , Y., OSANAI , Y., HIROI , Y. & SHIRAISHI , K. (eds) Geodynamic...two major gneiss groups: layered garnet –quartz –feldspar gneiss with subordinate pelitic, psammitic, and...and massive pyroxene –quartz –feldspar gneiss with minor mafic granulite (Kamenev 1975). However, these...is mainly composed of orthopyroxene- and garnet-bearing quartzofeldspathic gneisses with subordinate layered
 
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