- 2068 Chaitra · 1 mark
Short note: Slate
Short answer
Slate is a fine-grained low-grade metamorphic rock from shale or clay, with slaty cleavage allowing it to split into thin strong sheets. Composed of mica, chlorite, quartz; durable, low porosity. Used for roofing, flooring; weak along cleavage, causing slope and tunnel issues.
Write a short note on slate.
Slate is a fine grained, low-grade metamorphic rock formed from shale or clay by regional metamorphism. Its main feature is slaty cleavage, which allows it to split into thin, strong, smooth sheets. Colours are grey, black, green or purple. Minerals are mica (sericite), chlorite and quartz. It has low porosity and water absorption and is durable. Uses: roofing sheets, flooring, paving, damp-proof course and blackboards. In engineering it is weak along cleavage, which causes slope and tunnel problems.
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