けいかんせき
鶏冠石
1. realgar
2. RealgarRealgar, α-As4S4, is an arsenic sulfide mineral, also known as "ruby sulphur" or "ruby of arsenic". It is a soft, sectile mineral occurring in monoclinic crystals, or in granular, compact, or powdery form, often in association with the related mineral, orpiment (As2S3). It is orange-red in colour, melts at 320 °C, and burns with a bluish flame releasing fumes of arsenic and sulfur. Realgar is soft with a Mohs hardness of 1.5 to 2 and has a specific gravity of 3.5. Its streak is orange colored.
Read “Realgar” on English Wikipedia
Read “鶏冠石” on Japanese Wikipedia
Read “Realgar” on DBpedia
Read “Realgar” on English Wikipedia
Read “鶏冠石” on Japanese Wikipedia
Read “Realgar” on DBpedia
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