Sedimentary Rocks

Sedimentary rocks are the most commonplace rock kinds which might be freely uncovered in the world’s floor. They are shaped from other rock substances for the reason that they may be made up from the buildup of weathered and eroded pre-present rocks.

Oil Shale

Oil Shale is organic-rich sedimentary rocks that have contain kerogen (insoluble organic matter in sedimentary rock. When subjected to intense heat, these shales yield...

Shale

Shale is a laminated or fissile clastic sedimentary rock that composed of predominance of silt and clay other minerals , especially quartz and calcite....

Sandstone

Sandstone is a sedimentary rock composed mainly of sand-sized mineral particles or rock fragments. It is a common rock type that is found all...

Greywacke

Greywacke is variation of sandstone that saperate from other to hardness, dark color, and poorly sorted angular grains of quartz and feldspar. Generally found in Palezoic strata. Generally larger grain can be sand clast. Matrix material more than 15%.
Dolomite - Large specimen with thick tabular white, glossy crystals to 2cm. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.

Dolostone (Dolomite)

An important rock-forming mineral, dolomite is named after the French mineralogist Déodat Gratet de Dolomieu. It is a colorless to white, pale brown, grayish, reddish, or pink mineral. Its crystals are commonly rhombohedral or tabular, often have curved faces, and sometimes cluster in saddle-shaped aggregates.

Mudstone

Mudstone is a really pleasant-grained sedimentary rock consisting of a aggregate of clay and silt-sized particles. Terms including claystone and siltstone are often used in location of mudstone, although these consult with rocks whose grain length falls inside a good deal narrower stages and underneath near exam those are frequently technically mudstones. Shale is frequently used to explain mudstones that are difficult and fissile (wreck along bedding planes). Marl is regularly used to explain carbonate-rich tender mudstones.

Limestone

Limestone is a sedimentary rock such as greater than 50% calcium carbonate ( calcite - CaCO three). There are many exceptional kinds of limestone formed thru a ramification of tactics. Limestone may be precipitated from water ( non-clastic, chemical or inorganic limestone), secreted by using marine organisms including algae and coral

Chert

Chert is a microcrystalline or cryptocrystalline sedimentary rock cloth composed of silicon dioxide (SiO2). It takes place as nodules, concretionary hundreds, and as layered deposits. Chert breaks with a conchoidal fracture, often producing very sharp edges. Early people took advantage of the way chert breaks and used it to fashion cutting equipment and weapons. The name "flint" is also used for this fabric.

Conglomerate

Conglomerateis a sedimentary rock shaped from rounded gravel and boulder sized clasts cemented collectively in a matrix. The rounding of the clasts indicates that they've been transported a long way from their authentic source (e.G. Through a river or glacier), or that they've resided in a high energy surroundings for a while
Breccia

Breccia

Breccia is a rock shaped from angular gravel and boulder-sized clasts cemented collectively in a matrix. The angular nature of the clasts suggests that they have now not been transported very far from their source. There are numerous modes of formation for breccia. Some constitute consolidated material accumulated on steep hill slopes or on the foot of cliffs.