torbanite
Sign in to savethumb|Photomicrograph of torbanite, from Bathgate, Scotland Torbanite, also known historically as boghead coal or kerosene shale, is a variety of fine-grained black oil shale. It usually occurs as lenticular masses, often associated with deposits of Permian coals. Torbanite is classified as lacustrine type oil shale. A similar mineral, cannel coal, is classified as being a terrestrial form of oil shale, not a lacustrine type.
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thumb|Photomicrograph of torbanite, from Bathgate, Scotland Torbanite, also known historically as boghead coal or kerosene shale, is a variety of fine-grained black oil shale. It usually occurs as lenticular masses, often associated with deposits of Permian coals. Torbanite is classified as lacustrine type oil shale. A similar mineral, cannel coal, is classified as being a terrestrial form of oil shale, not a lacustrine type.
Torbanite is named after Torbane Hill near Bathgate in West Lothian, Scotland, a major location of occurrence. Torbanite found in Bathgate may have formations of bathvillite found within it. Historically, two other names have been used for torbanite. Boghead coal is named after Boghead estate, also near Bathgate in Scotland. In Australia, the historical name for torbanite was kerosene shale.