Alleghanyite: brown, translucent xtls, < 1 mm across.

Micro crystals of alleghanyite {(Mn,Mg)5(SiO4)2(OH)2} with willemite and other minerals forming a seam on Sterling Hill ore.

The pale tan to beige mineral surrounding the crystals is probably altered, massive alleghanyite.  Some of the surrounding material is willemite, easy to spot with a  short-wave UV lamp.

Locality:  Sterling Hill, Ogdensburg, New Jersey.

Photos taken using a Mini-VID USB eyepiece camera (older 1.3 megapixel model).

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