Hedenbergite quartz point with sprouting growth and sugary quartz crystals Stalactitic chalcedony under a centimeter long when

under a centimeter long when full-grown

The minerals are on a heavy dark matrix that is likely manganese-based

Some of the nodules are hollow and crystal-lined inside similar to a geode

I have not been able to find info on common associates of this material) that appears to have calcite underneath

Hedenbergite quartz point with sprouting growth and sugary quartz crystals Stalactitic chalcedony under a centimeter long whenLocale: HuangGangLiang mining district, Inner Mongolia, China Approx point length: 3" Approx weight: 64g These quartz points are from HuangGangLiang, and commonly called Mongolian or Inner Mongolian quartz. When the primary inclusion is hedenbergite, enough to give the quartz a greenish tint, it is more appropriately called hedenbergite quartz. This isn't your typically shiny quartz crystal; the points have a matte luster with a sheen effect,