The document discusses the three main types of rocks: igneous, sedimentary, and metamorphic. It provides details on their origin, formation process, structure, texture, types, and examples. Key differences are noted - igneous rocks form from cooled lava/magma, sedimentary rocks form from compressed sediments, and metamorphic rocks form from changes to existing rocks due to heat and pressure. The conclusion states the three rock types can be identified by their characteristics but may also transition between types through the rock cycle.

1. STONES
BUILDING AND FINISH MATERIALS
COURCE CODE: ARC-2193
SUBMISSION : 03
NAME-JANNATUL NAIEM
ID-201932030022

2. TYPE OF
STONES ARE
2.SEDIMENTARY
• Rock salt
• Sand stone
• Limestone
• Fossil stone
• Travertine
• Soapstone
3.METAMORPHIC
• Gneiss
• Amphibolite
• Marble
• Slate
1.IGNEOUS
• Scoria
• Obsidian
• Granite
• Basalt
4.Artificial or man-
made stone.
• Anson stone.
• Concrete block.
• Artificial marble.
• Bituminous stone.

3. Metamorphic Stone
Sedimentary Stone
Igneous Stone
SKETCHES

4. Igneous Stone -Forms When Magma Or Lava Cools And Hardens To Become To
Solid.
Sedimentary Stone-Forms When Minerals That Form From Solutions Or
Sediment From Older Rocks Get Pressed And Cemented Together
Metamorphic Stone-Forms When Pressure Temperature Or Chemical Processes
Change Existing Rock.

5. Parameters of Comparison Igneous Stone Sedimentary Stone Metamorphic Stone
Origin
Igneous rocks are derived from
molten material (magma or
lava).
Sedimentary rocks are derived
from sediments of pre-existing
rocks, fossils, and tiny pieces of
animal remains.
Metamorphic rocks are derived
from other rocks.
Formation
Igneous rocks are formed when
molten material from volcanoes
cools down and solidifies.
Sedimentary rocks are formed
when sediments are
accumulated, deposited, and
cemented at the bottom of
water bodies.
Metamorphic rocks are formed
when other pre-existing rocks
go through chemical and
physical changes due to heat
and pressure.
Comparison Table Between Igneous, Sedimentary, and Metamorphic Stone

6. Structure
Igneous rocks mainly have a
crystal-like structure.
Sedimentary rocks have a
fragmentary structure and
contain an inner layering called
bedding.
Metamorphic rocks are very
hard and may appear to be
banded or layered.
Texture
The texture of igneous rocks
depends on how fast it has
cooled down. Textures range
from coarse-grained to glassy.
The texture of sedimentary
rocks depends on their clast,
age, and depositional setting.
These are generally grainy.
The texture of metamorphic
rocks is foliated due to pressure.
Some rocks may even appear to
be non-foliated and banded.
Types
Igneous rocks are of two types –
intrusive (solidified from magma
below the earth’s surface) and
extrusive (solidified from lava
on the surface of the earth)
Sedimentary rocks are of three
types – clastic sedimentary
rocks (detrital), organic
sedimentary rocks
(biochemical), and chemically
precipitated sedimentary rocks.
Metamorphic rocks can be
divided into two basic
categories – foliated
metamorphic rocks and non-
foliated metamorphic rocks.
Examples
Intrusive igneous rocks include
– granite, diorite, pegmatite;
Extrusive igneous rocks include
– basalt, tuff, pumice, scoria,
etc.
Limestone, iron ore, chalk, coal,
sandstone, siltstone, shale, flint,
etc.
Slate, marble, quartzite,
phyllite, gneiss, hornfels, etc.

7. Conclusion
Igneous, sedimentary, and metamorphic rocks can be told apart easily by their formation, texture, structure, and so on. The three
types of rocks may sometimes be the same mineral or sediment going through a rock cycle.
For example, an igneous rock may go through the process of weathering and cementation to form a sedimentary rock. This rock
may further change into a metamorphic rock if subjected to changes in heat and pressure.