Ruarsite is a relatively rare mineral that is typically found in hydrothermal veins associated with copper deposits. It belongs to the mineral class of sulfates and is composed of oxygen, copper, lead, and sulfur. Ruarsite typically occurs in the form of small, tabular to prismatic crystals, which are often found as aggregates or groups.
From a physical standpoint, ruarsite exhibits a translucent to transparent appearance, with a vitreous luster. Its color ranges from pale green to yellowish-green, and in some cases, it may even show a bluish tint. The mineral's hardness falls within the range of 4 to 4.5 on the Mohs scale, indicating it can be easily scratched by common minerals such as fluorite or apatite.
Chemically, ruarsite is mainly composed of copper sulfate and lead sulfate, with the formula CuPb2(SO4)(OH)4. It often forms as a secondary mineral in the oxidation zone of copper deposits, where it is generated by the reaction of copper sulfides with oxygen and water. Ruarsite's crystal structure is orthorhombic, featuring flat or wedge-like prisms.
Due to its scarcity and its occurrence alongside valuable copper deposits, ruarsite holds significance for mineral collectors. Its distinct green color and crystal morphology contribute to its allure, making it sought after by enthusiasts. However, ruarsite's applications are limited to its value in the field of mineralogy and scientific research, as it lacks any industrial or commercial usefulness.
