4-5 lines on slate rock
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Explanation:
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is the finest grained foliated metamorphic rock. ... It may mean a single roofing tile made of slate, or a writing slate.
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Slate rock.
Explanation:
- Slate is a metamorphic rock .
- It has formed under the conditions of increased temperature and pressure.
- Slates are dark coloured exceedingly fine grained low grade metamorphic rocks .
- They have a remarkable property called slaty cleavage which permits them to split into thin broad sheets.
- They are composed of a very fine grained mixture of micas and chlorite with some quartz and feldspar.
- Majority of slates are formed by dynamic metamorphism of shales.
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