Realgar
Realgar
Realgar (pronounced: /ˈriːəlɡɑːr/), also known as ruby sulphur or ruby of arsenic, is an arsenic sulfide mineral, historically used for its pigment and medicinal properties.
Etymology
The term "Realgar" is derived from the Arabic phrase "rahj al-ġār" (رهج الغار), meaning "powder of the cave", due to its natural occurrence in subterranean environments.
Description
Realgar is a bright orange-red monoclinic mineral. It is soft, with a Mohs hardness of 1.5 to 2, and has a specific gravity of 3.5. It is formed by the sublimation of arsenic and sulfur in volcanic vents and hot springs.
Medical Use
Historically, Realgar has been used in traditional medicine, particularly in Traditional Chinese Medicine (TCM) and Ayurveda. It was used to treat a variety of ailments, including skin diseases, intestinal parasites, and certain types of cancer. However, due to its high arsenic content, it is no longer commonly used in medicine.
Toxicity
Realgar contains a significant amount of arsenic, which is highly toxic. Prolonged exposure can lead to arsenic poisoning, which can cause a variety of health problems, including skin lesions, cancer, and cardiovascular disease.
Related Terms
External links
- Medical encyclopedia article on Realgar
- Wikipedia's article - Realgar
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