Rhyodacite

Laterite

Rhyodacite and Laterite

Rhyodacite

Laterite

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1 Definition

1.1 Definition

Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite

Laterite rock is a type of Sedimentary rock which is rich in iron and aluminium, formed in hot and wet tropical areas

1.2 History

1.2.1 Origin

USA

India

1.2.2 Discoverer

Unknown

Francis Buchanan-Hamilton

1.3 Etymology

Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite

From Latin later brick, tile + -ite1

1.4 Class

Igneous Rocks

Sedimentary Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

1.5 Family

1.5.1 Group

Volcanic

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Earthy

Earthy, Massive, Porphyritic

2.2 Color

Black to Grey, Dark Greenish - Grey

Brown, Buff, Red

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Skeletal

Rough and Banded

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Flooring, Interior Decoration

3.1.2 Exterior Uses

As Building Stone, Garden Decoration

As Building Stone, As Facing Stone, Garden Decoration

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping

Cobblestones, for Road Aggregate, Landscaping, Roadstone

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Creating Artwork

An Oil and Gas Reservoir, Source of bauxite, Used in aquariums

4 Types

4.1 Types

Not Available

4.2 Features

Available in Lots of Colors and Patterns

Is one of the oldest rock, Very fine grained rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Not Yet Used

Used

4.3.4 Famous Sculptures

Not Applicable

Data Not Available

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Not Yet Used

Used

4.4 Fossils

Absent

Present

5 Formation

5.1 Formation

Rhyodacite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Laterite is a type of sedimentary rock which is generally a reddish weathering product of basalt.

5.2 Composition

5.2.1 Mineral Content

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon

Aluminum Oxides, Biotite, Hematite, Hornblade, Iron Oxides, Manganese Oxides, Micas, Muscovite or Illite, Plagioclase, Pyroxene

5.2.2 Compound Content

Ca, Fe, Potassium Oxide, NA, Potassium, Silicon Dioxide

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.4.2 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Not Applicable

5.4.3 Weathering

✔ ✘

5.4.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

5.4.5 Erosion

✔ ✘

5.4.6 Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Chemical Erosion, Water Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5.5-62

1 7

6.1.5 Grain Size

Fine Grained

6.1.6 Fracture

Conchoidal

6.1.7 Streak

Black

White

6.1.8 Porosity

Less Porous

Highly Porous

6.1.9 Luster

Greasy to Dull

Dull

6.1.10 Compressive Strength

200.50 N/mm²NA

0.15 450

7.3.2 Cleavage

Not Available

Not Applicable

7.3.3 Toughness

2.1

Not Available

7.4.2 Specific Gravity

2.34-2.40Not Available

0 8.4

2.4.1 Transparency

Opaque

2.5.1 Density

Not AvailableNot Available

0 1400

4.4 Thermal Properties

4.4.1 Specific Heat Capacity

1.12 kJ/Kg KNA

0.14 3.2

7.1.2 Resistance

Heat Resistant

Heat Resistant, Pressure Resistant

8 Reserves

8.1 Deposits in Eastern Continents

8.1.1 Asia

China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

India

8.1.2 Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

East Africa, Western Africa

8.1.3 Europe

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland

England, Romania, Scotland

8.1.4 Others

Not Yet Found

8.2 Deposits in Western Continents

8.2.1 North America

Canada, USA

8.2.2 South America

Not Yet Found

8.3 Deposits in Oceania Continent

8.3.1 Australia

Not Yet Found

Central Australia, Western Australia

All about Rhyodacite and Laterite Properties

Know all about Rhyodacite and Laterite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite belongs to Igneous Rocks while Laterite belongs to Sedimentary Rocks.Texture of Rhyodacite is Earthy whereas that of Laterite is Earthy, Massive, Porphyritic. Rhyodacite appears Skeletal and Laterite appears Rough and Banded. The luster of Rhyodacite is greasy to dull while that of Laterite is dull. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Laterite is available in brown, buff, red colors. The commercial uses of Rhyodacite are cemetery markers, creating artwork and that of Laterite are an oil and gas reservoir, source of bauxite, used in aquariums.