Texture and hardness.
Rocks are classified into three main groups based on how they are formed: igneous rocks (formed from the cooling of molten rock), sedimentary rocks (formed from the accumulation and cementation of sediment particles), and metamorphic rocks (formed from the alteration of existing rocks under high heat and pressure). Each group has various subcategories based on specific characteristics and composition.
Rocks that form from fragmental material are classified as sedimentary rocks. Examples include sandstone, shale, and conglomerate. These rocks are composed of fragments of pre-existing rocks or minerals that have been lithified through processes like compaction and cementation.
Igneous rocks are the category of rocks that contain diamonds. The two types of igneous rocks that form diamonds are kimberlites and lamproites.
Igneous rocks that result from lava solidifying above ground are classified as extrusive igneous rocks. These rocks cool quickly, leading to small mineral grains and a fine-grained texture. Examples include basalt and rhyolite.
Rocks are classified as igneous, sedimentary, or metamorphic based primarily on their origin and how they were formed. Igneous rocks are formed from cooled magma or lava, sedimentary rocks are formed from the accumulation of sediments, and metamorphic rocks are formed from the alteration of existing rocks due to heat and pressure.
Detrital, Chemical, and Organic.
Geologists classify rocks by where they are formed; above ground or under ground
The two ways are: Heterogeneous Homogeneous
Two ways are by temperature and brightness
Metamorphic rocks are classified into two main groups: foliated and non-foliated. Foliated rocks have a layered or banded appearance due to the alignment of mineral grains during metamorphism, while non-foliated rocks lack this layered structure and typically consist of interlocking crystals.
Three main ways and are classified accordingly. Igneous rocks form from molten material called magma.
they are classified into 3 major kinds of rocksthey are the ;IGNEOUS ROCKS,SEDIMENTARY ROCKS,AND METAMORPHIC ROCKS
sedimentary rocks can be classified by detrial, chemical ,or organic
elevation and shape
Public and Private
spectrum and temperature
Fixed Bridges or Moveable Bridges