Inner Mongolian quartz, large point Magnetite and can make for interesting

and can make for interesting pieces to cut open

Hematite causes this coloration

I do not detect any altered appearance

but these specimens from the renowned N'Chwaning Mines region form tabular square crystals similar to wulfenite

as found at the base of this piece

Inner Mongolian quartz, large point Magnetite and can make for interestingLocale: HuangGangLiang mining district, Inner Mongolia, China Approx point length: 4. 5" Approx weight: 118g These quartz points are from HuangGangLiang, and commonly called Mongolian or Inner Mongolian quartz. This isn't your typically shiny quartz; the points have a matte luster with a sheen effect, producing a ghostly appearance. The tip of the main point is tinted a greenish gray color by hedenbergite inclusions, while the rest of the point is