Rock classification Sydney Cammarata

Sedimentary Rocks

There are three kinds of sedimentary rock specimens inorganic, chemical and organic.
The Inorganic sedimentary rocks are Conglomerate, Breccia, Sandstone, Siltstone, and Shale. These rocks are fragments. fragments is a sand grain that is made up of multiple grains that are connected on the grain scale.
The chemical sedimentary rocks are Rock salt, Rock gypsum, Dolostone and Limestone. These rocks are crystalline. crystalline is made of crystals interlocked with each other.
The organic sedimentary rocks are Bituminous coal and Limestone. These rocks are Bioclastic. bioclastic is skeletal fossil fragments of once living marine or land organisms that are found in sedimentary rocks.
On the rock cycle sedimentary is located on the lower right side. The rock cycle shows the formation, breakdown, and reformation of a rock that are sedimentary, igneous, and metamorphic. The Rock Cycle is a group of changes. Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock.

IGNEOUS ROCKS

There many different types of Igneous rocks.Most igneous rocks contain two or more minerals, which is why some rocks have more than one color. For example, the most common minerals in granite are quartz (white or gray), feldspar (white or pinks of varying shades), and mica (black).

This is an extrusive rock. Extrusive is when magma reaches the Earth's surface a volcano and cools quickly. Most extrusive (volcanic) rocks have small crystals.

This is an intrusive rock. Intrusive is hen magma cools slowly below the Earth's surface. Most intrusive rocks have large, well-formed crystals.

Extrusive rocks are Basalt, Rhyolite, Andesite, and Obsidian. Intrusive rocks are diorite, gabbro, granite, pegmatite, and peridotite.

Metamorphic Rocks

A metamorphic rock is a result of a transformation of a pre-existing rock. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes.
There are two basic types of metamorphic rocks. Foliated metamorphic rocks such as gneiss, phyllite, schist, and slate have a layered or banded appearance that is produced by exposure to heat and directed pressure.
The other type of metapmorphic rock is Non-foliated metamorphic rocks such as hornfels, marble, quartzite, and novaculite do not have a layered or banded appearance.
Examples of Foliated metapmorphic rocks
Examples of NonFoliated metapmorphic rocks
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Credits:

Created with images by ShekuSheriff - "sedimentation stone rocks" • James St. John - "Diatomite" • James St. John - "Black shale" • James St. John - "Clear rock salt (halitite)" • James St. John - "Bituminous coal (Pennsylvanian; eastern or midwestern USA)" • James St. John - "Vesicular basalt" • James St. John - "Porphyritic granite (Precambrian; St. Cloud area, Minnesota, USA)"

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