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→Ores of Mercury
* Oxide Ore
* Oxide Ore
** Monotroydite (HgO)
** Monotroydite (HgO)
Extraction of Mercury and Its Purification - Modern Method
Extraction of mercury from cinnabar involves the following steps.
# Crushing and Concentration: The ore is crushed and finely powdered in ball mills and then concentrated by frost process.
# Combined Roasting and Distillation: The concentrated ore is placed on the perforated arches and heated by flames rising from the furnace below mercuric oxide first formed by the oxidation of cinnabar, decomposes at about 50<sup>o</sup>K to give mercury
# HgS + 3O<sub>2</sub> → 2HgO + 2SO<sub>2</sub>
# 2HgO → 2Hg + O<sub>2</sub>
== रासभेदाः ॥ Types of Parada ==
== रासभेदाः ॥ Types of Parada ==