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Some Analyses of Connecticut Heulandites

1/14/2019

 
by Harold (Fritz) Moritz
Picture
Specimen 1367 - 21 x 6.5 cm. H. Moritz photo.
Recently I submitted samples of heulandite subgroup crystals from several places around Connecticut for analyses.  Micromounters New England will perform a limited number of scanning electron microscope – energy dispersive spectroscopy (SEM-EDS) analyses for members such as me.  SEM-EDS provides elemental chemistry on extremely small samples except for the very light elements H, He, B, Be and Li.
​
The goals of this project were to better determine the particular species of heulandite on the specific samples and from that information hopefully extend the species identifications to unanalyzed specimens from the same localities, and perhaps throughout the state.  Consequently, 3 samples were submitted from the very prolific O&G basalt quarry locality and 3 samples from veins and faults hosted by metamorphic rocks.  All were initially identified based on their crystal habit and physical properties

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