Sighting 4740009
Unverified
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| Igneous Intrusion | DavidDedenczuk | Yesterday |
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User's notes
Mugga Mugga Porphyry. Silurian age rhyodacite. Shows phenocrysts of K-feldspar, plagioclase, quartz and a ferromagnesium mineral (possibly biotite) in a mauve-grey groundmass.
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Sighting information
- At least 1 Abundance
- DavidDedenczuk Recorded by
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Record quality
Quality score
2 / 7
- Images or audio
- Description
- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
- GPS evidence of location
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