Mind map
Igneous rock classification
Map content
Igneous rock classification
Silic/Acid
- >66% Si0
- Granite (coarse grained)
- Component silicate minerals
- Orthoclase/ plagioclase feldspar
- Muscovite mica / biotite mica
- Tectonic origin
- Destructive
- Light coloured
Intermediate
- 65-55% Si0
- Diorite (coarse grained)
- Component silicate minerals
- Horneblende
- Plagioclase feldspar
- Biotite mica
- Tectonic origin
- Destructive
- Grey
Mafic/Basic
- 54-45% Si0
- Gabbro (coarse grained)
- Component silicate minerals
- Horneblende
- Augite
- Olovine
- Plagioclase feldspar
- Tectonic origin
- Constructive
- Dark
Ultra mafic/basic
- <44% Si0
- Peridotite
- Component silicate minerals
- Olovine
- Augite
- Tectonic origin
- Constructive
- Black
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- Description
- AS - Level Geology Mind Map on Igneous rock classification, created by Meagan Bradley on 19/04/2016.
- Created by
- Meagan Bradley
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