Tasmanite is a rock type almost entirely consisting of the prasinophyte alga Tasmanites. It is commonly associated with high-latitude, nutrient-rich, marginal marine settings find in Tasmania. It is classified as marine type oil shale. It is found in many oil-prone source rocks and, when present, contributes to the oil generation potential of the ...
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http://en.wikipedia.org/wiki/Tasmanite
(from the article `algae`) ...very old. Organic cysts resembling modern Micromonadophyceae cysts date from about 1.2 billion years ago. Tasmanites formed the Permian `white ... Tasmanites is a marine alga the remains of which make up nearly all the kerogen of such oil shales as the Permian tasmanite of Australia and the ... [2 r...
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http://www.britannica.com/eb/a-z/t/15
Tasmanite is a translucent, reddish-brown fossil resin found in Tasmania.
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http://www.probertencyclopaedia.com/browse/AT.HTM
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