1 Definition
1.1 Definition
Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation
1.2 History
1.2.1 Origin
Unknown
1.2.2 Discoverer
Unknown
1.3 Etymology
From French schiste, Greek skhistos i.e. split
1.4 Class
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
1.6 Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Foliated, Platy
2.2 Color
Black, Blue, Brown, Dark Brown, Green, Grey, Silver
2.3 Maintenance
Less
2.4 Durability
Durable
2.4.1 Water Resistant
✔
✘
81% - Metamorphic Rocks Rocks have it !
▶
2.4.2 Scratch Resistant
✔
✘
65% - Metamorphic Rocks Rocks have it !
▶
2.4.3 Stain Resistant
✔
✘
42% - Metamorphic Rocks Rocks have it !
▶
2.4.4 Wind Resistant
✔
✘
19% - Metamorphic Rocks Rocks have it !
▶
2.4.5 Acid Resistant
✔
✘
15% - Metamorphic Rocks Rocks have it !
▶
2.5 Appearance
Layered and Shiny
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Floor Tiles, Interior Decoration
3.1.2 Exterior Uses
Garden Decoration, Paving Stone
3.1.3 Other Architectural Uses
Not Yet Used
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, for Road Aggregate, Roadstone
3.2.2 Medical Industry
Not Yet Used
3.3 Antiquity Uses
Artifacts
3.4 Other Uses
3.4.1 Commercial Uses
Used in aquariums, Writing Slates
4 Types
4.1 Types
Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist.
4.2 Features
Easily splits into thin plates, Smooth to touch
4.3 Archaeological Significance
4.3.1 Monuments
Not Yet Used
4.3.2 Famous Monuments
Not Applicable
4.3.3 Sculpture
Not Yet Used
4.3.4 Famous Sculptures
Not Applicable
4.3.5 Pictographs
Used
4.3.6 Petroglyphs
Used
4.3.7 Figurines
Not Yet Used
4.4 Fossils
Absent
5 Formation
5.1 Formation
Schist formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.
5.2 Composition
5.2.1 Mineral Content
Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc
5.2.2 Compound Content
CaO, Carbon Dioxide, MgO
5.3 Transformation
5.3.1 Metamorphism
✔
✘
50% - Metamorphic Rocks Rocks have it !
▶
5.3.2 Types of Metamorphism
Not Applicable
5.3.3 Weathering
✔
✘
65% - Metamorphic Rocks Rocks have it !
▶
5.3.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
5.3.5 Erosion
✔
✘
77% - Metamorphic Rocks Rocks have it !
▶
5.3.6 Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
3.5-4
Check 3.5-4 Range Rocks!
1
7
6.1.2 Grain Size
Medium to Fine Coarse Grained
6.1.3 Fracture
Conchoidal
6.1.4 Streak
White
6.1.5 Porosity
Highly Porous
6.1.6 Luster
Shiny
6.1.7 Compressive Strength
Not Available
Rank: N/A (Overall) ▶
0.15
450
6.1.8 Cleavage
Slaty
6.1.9 Toughness
1.5
6.1.10 Specific Gravity
2.5-2.9
Check 2.5-2.9 Range Rocks!
0
8.4
6.1.11 Transparency
Opaque
6.1.12 Density
2.8-2.9 g/cm3
Check 2.8-2.9 g/cm3 Range Rocks!
0
1400
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
Not Available
Rank: N/A (Overall) ▶
0.14
3.2
6.2.2 Resistance
Impact Resistant, Pressure Resistant, Water Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam
7.1.2 Africa
Egypt, Ethiopia, Morocco, Nigeria, South Africa
7.1.3 Europe
Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland
7.1.4 Others
Not Yet Found
7.2 Deposits in Western Continents
7.2.1 North America
Canada, Costa Rica, Cuba, Mexico, Panama, USA
7.2.2 South America
Brazil, Colombia, Guyana
7.3 Deposits in Oceania Continent
7.3.1 Australia
New South Wales, New Zealand, Queensland