#50 Conichalcite Mexico (1981) FOV:4.8 mm
Another specimen I purchased in 1981 for $1.00
Another specimen I purchased in 1981 for $1.00
I remember seeing needle cassiterite an a museum years ago and to my surprise I have a small thumbnail specimen. For a single metal oxide, cassiterite is a amazing mineral
One of the calibration specimens I am using to evaluate my technique. FOV 1.6 mm is a bit past the sweet spot of my current microscope build, but my motorized…