How To Identify Igneous Rocks In Thin Section Hand Sample Geo Girl In igneous petrology, you need to identify igneous rocks and the minerals those rocks are made of in both hand specimen and thin section. in this video, i sh. Learn to identify igneous rocks in thin section and hand sample through this comprehensive 31 minute video tutorial. explore the characteristics of various igneous rock types, including basalt, gabbro, diabase, rhyolite, granite, syenite, andesite, diorite, dacite, peridotite, obsidian, pumice, scoria, anorthosite, and tuff.
How To Identify Metamorphic Rocks In Thin Section Hand Sample ођ In metamorphic petrology, you need to identify metamorphic rocks and the metamorphic minerals those rocks are made of in both hand specimen and thin section . Learning to identify minerals in thin section takes practice. but, if we have a hand specimen or know what kind of rock we are looking at, the most likely possibilities are limited – and identification is simplified. and some common minerals have key properties that make identification straightforward. 2 thin section the thin section gives you the opportunity to make a more thorough investigation of the mineral properties and relationships. where possible try and collect quantitative information on the minerals you are observing (extinction angles etc.). 1. visual inspection of thin section: produce a brief description of the slide simply held. Thin section 8. this is a thin section of a rock made of crystals of, plagioclase feldspar, k feldspar or orthoclase feldspar and quartz. small amounts of biotite mica also occur. images in this resource could be used to practise microscope drawing skills. try comparing this thin section with the thin sections shown in ‘microscopy: igneous.
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