Heliotrope (mineral) Heliotrope (mineral) The mineral aggregate heliotrope (from Greek ἥλιος, "hḗlios" “Sun”, τρέπειν, "trépein" “to turn”), also known as bloodstone, is a variety of jasper or chalcedony (which is a cryptocrystalline mixture of quartz). The "classic" bloodstone is green jasper (chalcedony) with red inclusions of hematite. The red inclusions are supposed to resemble spots of blood, hence the name "bloodstone". The name "heliotrope" derives from various ancient notions about the manner in which the mineral reflects light. These are described, e.g., by Pliny the Elder ("Nat. Hist." 37.165). Heliotrope was called "stone of Babylon" by Albert the Great and he referred
Mineral del Monte Mineral del Monte Mineral del Monte, commonly called Real del Monte ( or El Real, is a small mining town, and one of the 84 municipalities of Hidalgo, in the State of Hidalgo in east-central Mexico. It is located at an altitude of . As of 2005, the municipality had a total population of 11,944. The Mine District of Pachuca—Real del Monte has a long and rich heritage. The mines in the district are conservatively estimated to have produced 1.2 billion Troy ounces of silver and 6.2 million ounces of gold. That is 6% of the silver mined throughout the