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Description: | Mineral specimen of Opal associated with Limonite. Collected from Bulla Creek, Queensland, Australia. Collected by P. Walther, 1907.
Opal is a very popular gemstone. Black opal, which has a very dark background colour, is the most sought-after variety. 85% of the worlds opal comes from Australia. Another important source is in Mexico, where fire opal, which has a yellow to red colour, is mined.
The specimen was found in Australia. | Publisher: | Tyne & Wear Archives & Museums | Subjects: | Classification: Opal P. Walther | Temporal: | Permian period (290 - 248 million years ago) | Source: | Tyne & Wear Archives & Museums | Identifier: | http://www.twmuseums.org.uk/geofinder/se... | Go to resource |
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