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Mineralogical ClassificationIMA 2006-020 = alloriite
12th Oct 2006 21:16 UTCMarco E. Ciriotti Manager
ALLORIITE- Monte Cavallucio, Campagnano, Lazio Italy
This NEW SPECIES forms minute colorless to pale violet tabular to stout prismatic micro hexagonal crystals in vugs, typically associated with sanidine, andradite, "biotite" etc. IMA#2006-020, and named for well known amateur mineralogist and collector Roberto Allori (b. 1933) who found the mineral. Formula: (Na,Ca,K)26(SO4)6Cl2, a new member of the cancrinite group and analog of afghanite. (omissis).
Complimenti vivissimi al grande AMIco Roberto!
14th Oct 2006 14:47 UTCMarco E. Ciriotti Manager
The formula expressed by Excalibur is quite different from this listed in the CNMNC IMA "Proposal approved in August 2006": Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5·H2O
15th Oct 2006 19:59 UTCJim Ferraiolo
15th Oct 2006 20:31 UTCMarco E. Ciriotti Manager
16th Oct 2006 00:54 UTCAntonio Borrelli Expert
16th Oct 2006 01:12 UTCJim Ferraiolo
18th Oct 2006 16:48 UTCPeter Haas
18th Oct 2006 17:00 UTCPeter Haas
11th Jan 2007 11:36 UTCMarco E. Ciriotti Manager
Reference:
• Chukanov, N.V., Rastsvetaeva, R.K., Pekov, I.V., Zadov, A.E. (2007): Alloriite, Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5·H2O, a new mineral of the cancrinite group. Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva, 137(1), 86-93.
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