1.9" Green, Hedenbergite Included Quartz on Ilvaite - Mongolia

This specimen contains green quartz crystals that are intermixed with black ilvaite and arsenopyrite, collected from the Huanggang Mines of Inner Mongolia. The green color of the quartz can be attributed to hedenbergite inclusions within the quartz.

Arsenopyrite is an iron arsenic sulfide with the chemical formula FeAsS. Depending on minerals present during formation, the iron can be replaced by cobalt (Cobaltite). Arsenopyrite is the most common mineral containing arsenic and can be found in igneous, metamorphic and sedimentary rock. Crystals can be found as prismatic, twinned, columnar, elongated and massive formations within veins and are found in locations all around the world.

Arsenopyrite contains a significant amount of poisonous arsenic, making it somewhat toxic. Therefore, washing hands following handling of arsenopyrite specimens, is recommended.

The "Huanggang Mine" is a complex of seven somewhat interconnected mines that are located near Chifeng City, Inner Mongolia, China. Incredible mineral specimens started coming out of this mining complex around 2009, however, the location provided for the specimens was a long ways away from the actual site. This is a practice commonly performed by dealers/miners following a new discovery to try and preserve the mineral site's true location, and/or for political purposes.

As the popularity of the site increased, more and more fascinating specimens were popping up on the market. Some of the earlier minerals included world-class ilvaite crystals, pink fluorite octahedrons, hedenbergite included quartz (many of which were discarded at first) and arsenopyrite. Over the following years, garnets, pink manganoan calcite, gorgeous fluorites, sphalerite, löllingite, borcarite, scheelite and a variety of other minerals began to surface on the market. To this day, new mineral discoveries are made in these mines.

A brief description of the mine and minerals from the Huanggang Deposit.

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DETAILS
SPECIES
Quartz var. Prase, Hedenbergite, Arsenopyrite & Ilvaite
LOCATION
Huanggang Mines, Chifeng, Inner Mongolia
SIZE
1.9 x 1.8"
CATEGORY
ITEM
#226196