|
|
Comments: Sodium (nyereteite) and potassium (gregoryite) carbonates, not stable in normal atmosphere, collected molten from the volcano and maintained in ...
webmineral.com/data/Gregoryite.shtml - 37k - Similar pages
http://webmineral.com/data/Gregoryite.shtml
Sodium (nyereteite) and potassium (gregoryite) carbonates, not stable in normal atmosphere, collected molten from the volcano and maintained in inert argon ...
webmineral.com/specimens/picshow.php?id=1... - 12k - Similar pages
[ More results from webmineral.com ]
http://webmineral.com/specimens/picshow.php?id=1492
Gregoryite mineral data, information about Gregoryite, its properties and worldwide locations.
www.mindat.org/min-6979.html - 23k - Similar pages
http://www.mindat.org/min-6979.html
Gregoryite. (Na2, K2, Ca)CO3 c. ©2001-2005 Mineral Data Publishing, version 1. Crystal Data: Hexagonal (synthetic). Point Group: 6mm. ...
www.handbookofmineralogy.org/pdfs/gregoryite.pdf - Similar pages
http://www.handbookofmineralogy.org/pdfs/gregoryite.pdf
Alkali carbonates nycrereite, ideally Na2Ca(CO3)2, and gregoryite, ideally Na2CO 3, are the major minerals in natrocarbonatite lavas from Oldoinyo Lengai ...
cat.inist.fr/?aModele=afficheN&cpsidt=21401785 - Similar pages
http://cat.inist.fr/?aModele=afficheN&cpsidt=21401785
Trace element geochemistry of nyerereite and gregoryite phenocrysts from Oldoinyo Lengai natrocarbonatite lava. Authors: Mitchell, R. H.; Kamenetsky, V. S. ...
adsabs.harvard.edu/abs/2008GeCAS..72R.637M - Similar pages
http://adsabs.harvard.edu/abs/2008GeCAS..72R.637M
Gregoryite phenocrysts have turbid, pale brown, oscillatorily zoned cores ( average ... Overgrowths on gregoryites (30 mum wide) are relatively sodic ...
adsabs.harvard.edu/abs/1990CoMP..105..143P - Similar pages
[ More results from adsabs.harvard.edu ]
http://adsabs.harvard.edu/abs/1990CoMP..105..143P
presence of large empty vesicles, large phenocrysts of gregoryite (grey), and skeletal nyerereite ... breakdown of gregoryite phenocrysts to a ®ne-grained/ ...
minmag.geoscienceworld.org/cgi/reprint/70/2/211.pdf - Similar pages
http://minmag.geoscienceworld.org/cgi/reprint/70/2/211.pdf
Larger phenocrysts of nyerereite and gregoryite, up to 2 mm in size, also occur in ... The rounded gregoryite phenocrysts exhibit many parallel exsolution ...
linkinghub.elsevier.com/retrieve/pii/S0377027300002511 - Similar pages
http://linkinghub.elsevier.com/retrieve/pii/S0377027300002511
of nyerereite (Na2Ca(CO3)2 , gregoryite [(Na,Ca)2CO3], halite- ... include gregoryite, nyerereite, calcite and neighborite. Along ...
www.goldschmidt2009.org/abstracts/finalPDFs/A887.pdf - Similar pages
http://www.goldschmidt2009.org/abstracts/finalPDFs/A887.pdf