Collection of 15 sedimentary rocks
Collection of 15 clastic (1-6), chemical (7-13) and organic (14-15) sedimentary rocks.
- Conglomerate: it is composed of sand particles reconsolidated and worn out by water.
- Gap: it is composed of reconsolidated angular fragments of sand-sized particles.
- Sandstone: composed of sand-sized particles, cemented by calcite, silica and iron oxides.
- Quartz sandstone: composed of quartz grains cemented through silica.
- Shale: sediment predominantly composed of clay.
- Arcose: is composed essentially of particles of quartz and feldspar with small amounts of mica.
- Tufa: it is a form of limestone deposited in hot springs, composed of calcite.
- Plaster is an evaporite rich in calcium sulfate.
- Limestone: consists predominantly of calcium carbonate.
- Dolomite: it is composed mainly of magnesium carbonate and calcium.
- Fossil limestone: is formed by fragments of shell deposited in swamps.
- Halite: consists of granular and crystalline fragments of sodium chloride.
- Chalk: is formed by fragments of colored crystalline calcite.
- Bituminous shale: contains solid hydrocarbons and plant remains.
- Bitumen: consists of carbonaceous materials and contains between 15 and 50% of volatile matter.