Analyses by SEM and XRD at the U.S. Geological Survey Lab, Denver, USA (Gene Foord), and the University of New Orleans Lab, New Orleans, USA (Jim Nazimoff & Al Falster).
Habit:
Thin tabular to tabular crystals in druzes, fans, and crusts; also grainy to glassy crusts.
Colour:
Medium dark green.
Luminescent properties:
none
Quality for species:
Good crystals or rich for species - important (!)
Abundance at site:
Rare
Confirmation
Validity:
Confirmed
Confirmation Methods:
XRD
Confirmation Details:
Where Tested and Reference ID: Gene Foord, USGS Lab, Denver, CO, USA
Mascot Mine, Gorham, Coos County, New Hampshire, USA