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Natromontebrasite from
Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA

Locality type:Quarry
Classification
Species:'Natromontebrasite' (not an IMA approved species)
Comments:Schooner (circa 1985) reports: "A few years ago, John Gillespie did a spectrographic analysis on a sample submitted by the author, finding much Na and hardly any Li. It is quite possible that natromontebrasite was fairly common... A few masses of Strickland quarry natromontebrasite, from the pollucite zone in the middle eastern wall, halfway down, are composed of intergrown metasomatic or hydrothermal alterations. Pink brazilianite, containing a trace of Mn (analysis by the USGS), is associated with augelite, lacroixite, and hydroxylapatite. This mineral was collected by Charles Thomas, and studied by Mary E. Mrose [USGS]." This mineral was discredited in 2007 as a mixture of montebrasite, lacroixite and wardite.
Abundance at site:Very Rare
Confirmation
Validity:Believed Valid
References
References:Schooner, Richard. (circa 1985) Untitled manuscript on central Connecticut mineralogy.;
Handbook of Mineralogy (http://www.handbookofmineralogy.org/pdfs/lacroixite.pdf)
Data
Mineral Data:Click here to view Natromontebrasite data
Locality Data:Click here to view Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA
 
Mineral and/or Locality  
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