New Petroleum Quartz from Mahajunga Province, Madagascar

New Petroleum Quartz from Mahajunga Province, Madagascar
Petroleum quartz from Madagascar, also known as “firefly quartz”, is a type of quartz crystal that contains inclusions of petroleum, methane, and asphaltite. These inclusions are often visible as golden-yellow or brownish-yellow liquid or solid matter within the quartz, and they exhibit a bright yellow to blue fluorescence under ultraviolet light. The crystals may also contain water inclusions, and some exhibit unique skeletal, elestial, and scepter formations. Properties of Petroleum Quartz from Madagascar: Physical Properties: Inclusions: The most distinctive feature is the presence of petroleum, methane, and asphaltite inclusions within the quartz. Fluorescence: The petroleum inclusions fluoresce under UV light, typically exhibiting a yellow to blue glow. Crystal Form: Petroleum quartz from Madagascar often displays skeletal, elestial, and scepter formations, and some crystals may be double terminated or contain water inclusions (enhydro). Hardness: Quartz, in general, is a 7 on the Mohs hardness scale, making it relatively hard and resistant to scratching. Brittle: Despite its hardness, quartz can be brittle and prone to fracturing. Petroleum quartz is believed to form through a combination of hydrothermal activity and sedimentary deposition. The petroleum inclusions are thought to be derived from ancient organic matter buried deep underground and subjected to high temperatures and pressures.