User:GeoWriter/Sandbox5
=Analcimite=
File:Foidite.jpg of the QAPF diagram for volcanic rocks (in German)]]
File:Petrology Igneous.jpg - analcimite plots in the Foidite field]]
Analcimite is a type of igneous rock; it is a subvolcanic rock or an extrusive rock.https://www.mindat.org/glossary/analcimite It is composed mostly of the minerals analcime and titanaugite. Analcimite is a type of foidite.https://www.mindat.org/min-48512.html Varieties are olivine analcimite, leucocratic analcimite and augite analcimite.https://www.mindat.org/min-48512.html Chemically, although analcime is a sodium aluminium silicate mineral, analcimite is a ???potassic??? or an ???ultrapotassic??? alkaline igneous rock.{{cite book | title=Igneous Rocks — A Classification and Glossary of Terms | publisher=Cambridge University Press | author=Le Maitre, R.W. (editor) | year=2002 | location=Cambridge | page=55 | isbn=0-521-66215-X| edition=2nd }} It is ultramafic or mafic in the TAS classification (see TAS diagram).https://www.mindat.org/min-50683.html
Analcimite forms lava flows{{Cite journal |doi = 10.1029/JB095iB12p19639|title = Olivine analcimite in the Cascade Range of Oregon|year = 1990|last1 = Conrey|first1 = Richard M.|journal = Journal of Geophysical Research|volume = 95|issue = B12|page = 19639|bibcode = 1990JGR....9519639C}} and volcanic plugshttps://ses.library.usyd.edu.au/bitstream/2123/17819/3/0000000609255990-Pecover_SimonRobert_2002.pdf as well as subvolcanic dykeshttp://lokality.geology.cz/2049&l=e and sills.{{Cite journal |doi = 10.1007/BF00373125|title = An Al-spinel ultramafic-mafic inclusion suite and high pressure megacrysts in an analcimite and their bearing on basaltic magma fractionation at elevated pressures|year = 1975|last1 = Wilkinson|first1 = J. F. G.|s2cid = 140684865|journal = Contributions to Mineralogy and Petrology|volume = 53|issue = 2|pages = 71–104|bibcode = 1975CoMP...53...71W}}
There is also basanitic-analcimitehttps://www.mindat.org/min-50680.html - it occupies the same QAPF field as tephritic foidite. (Basanitic foidite has more than 10% CIPW normative olivine, tephritic foidite has less than 10%).
Examples
- near Si Lake, Marion County, Oregonhttp://rruff.info/doclib/cm/vol35/CM35_367.pdf
- Bald Hill near Wallan, Victoria, Australiahttps://collections.museumvictoria.com.au/specimens/2189940
- near Santo Antônio da Barra, in southwestern Goiás, Brazilhttp://www.ppegeo.igc.usp.br/index.php/rbg/article/view/11377 - relict leucite crystals in this analcimite suggests it is actually altered leucitite.http://www.ppegeo.igc.usp.br 10663-12828-1-SM.pdf
- Zákupy diatreme, Czech Republichttps://gsa.confex.com/gsa/2016AM/webprogram/Paper284960.html
- Trijebine, SerbiaCenozoic Volcanism in the Mediterranean Area edited by Luigi Beccaluva, Gianluca Bianchini, B. Marjorie Wilson - page 94 - on Google Books
- near Cooktown, Queensland, Australia{{Cite journal |doi = 10.1080/00167616808728681|title = The geology and petrology of Cainozoic basaltic rocks in the Cooktown area, North Queensland|year = 1968|last1 = Morgan|first1 = W. R.|journal = Journal of the Geological Society of Australia|volume = 15|issue = 1|pages = 65–78|bibcode = 1968AuJES..15...65M}}
- Midland Valley of Scotlandhttp://earthwise.bgs.ac.uk/index.php/Permian_volcanic_activity,_Midland_Valley_of_Scotland>
- Los Molinos, Cordoba Province, ArgentinaEarly Cretaceous Volcanism in Central and Eastern Argentina During Gondwana ...
By Silvia Leonor Lagorio, Haroldo Vizán, Silvana Evangelina Geuna - page 23 - Google Books
- near Meshkinshahr, Iranhttps://inis.iaea.org/search/search.aspx?orig_q=RN:48064842
- Teic Dam, Iranhttps://www.persee.fr/doc/bulmi_0037-9328_1977_num_100_2_7126
- Tamazert, MoroccoWoolley, A.R. (1987) Alkaline Rocks and Carbonatites of the World:Africa, page 189 - on Google Books
- Tubuai, French Polynesiahttps://www.researchgate.net/profile/Mhammed_El_Azzouzi/publication/235828396_Geologie_et_petrologie_de_l%27ile_de_Tubuai_Australes_Polynesie_francaise/links/589206d1aca272f9a558492a/Geologie-et-petrologie-de-lile-de-Tubuai-Australes-Polynesie-francaise.pdf
- Makhtesh Ramon, Israelhttps://www.researchgate.net/publication/225177826_The_petrogenesis_of_basic_and_ultrabasic_alkaline_rocks_of_western_Makhtesh_Ramon_Israel_Geochemistry_melt_and_fluid_inclusion_study
- Taiúva in the Bauru Basin of São Paulo (state), Brazilhttps://www.researchgate.net/publication/279621534_Lithostratigraphic_map_of_the_Bauru_Basin_eastern_part_PR_SP_MG_scale_11000000
- Humphreys County, Mississippihttps://pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/88/8/1144/202181/k-ar-dates-from-upper-cretaceous-volcanic-rocks-in?redirectedFrom=fulltext
- Ary-Dzhang in Arctic Siberia, Russiahttps://www.sciencedirect.com/science/article/pii/S1068797117300858
- Monroe Uplift, Arkansashttps://digitalcommons.lsu.edu/cgi/viewcontent.cgi?article=5932&context=gradschool_disstheses
- Spring Mountain volcanic plug near Glen Innes in NSW, Australiahttps://ses.library.usyd.edu.au/bitstream/2123/17819/3/0000000609255990-Pecover_SimonRobert_2002.pdf
- Adrar, Mauritania"Geology and Resources of Aluminum", U.S. Geological Survey Professional Paper 1076, page C25
- North Qilian Mountains, ChinaProgress in Geology of China (1989-1992): Papers to 29th IGC (leucite-analcimite)
See also
- Blairmorite – A leucocratic variety of analcimite
References
{{Reflist}}