Ignimbrite and Granodiorite

Ignimbrite

Granodiorite

Definition

Ignimbrite is a volcanic rock consisting mainly of pumice fragments, formed by the consolidation of material deposited by pyroclastic flows

Granodiorite is a coarse-grained intrusive igneous rock containing quartz and plagioclase, and which has composition in between granite and diorite

History

Origin

New Zealand

Unknown

Discoverer

Patrick Marshall

Unknown

Etymology

From Latin ignis fire + imber, imbr- shower of rain, storm cloud + -ite

From granite + diorite

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Plutonic

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Aphanitic

Granular, Phaneritic

Color

Beige, Black, Brown, Grey, Pink, White

Black, Grey, Orange, Pink, White

Maintenance

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Yes

Acid Resistant

Appearance

Dull, Vesicular and Foilated

Veined or Pebbled

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration, Stair Treads

Exterior Uses

As Building Stone, Garden Decoration, Office Buildings, Paving Stone

As Building Stone, Bridges, Paving Stone, Garden Decoration, Office Buildings, Resorts

Other Architectural Uses

Curbing

Not Yet Used

Industry

Construction Industry

Building houses or walls, Construction Aggregate

As Dimension Stone

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork

Curling, Gemstone, Laboratory bench tops, Tombstones

Types

Not Available

Features

Always found as volcanic pipes over deep continental crust

Available in Lots of Colors and Patterns

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Used

Petroglyphs

Used

Figurines

Used

Fossils

Absent

Formation

Ignimbrites are formed from very poorly sorted mixture of volcanic ash or tuff and pumice lapilli, commonly with scattered lithic fragments.

Granodiorite is an intrusive igneous rock which is very hard, crystalline and is visibly homogeneous in texture and forms by melting of continental rocks.

Composition

Mineral Content

Apatite, Biotite, Calcite, Chlorite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz

Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

Compound Content

Ca, NaCl

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

Transformation

Metamorphism

Yes

Types of Metamorphism

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

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

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering

Chemical Weathering

Erosion

Yes

Types of Erosion

Chemical Erosion, Coastal Erosion

Chemical Erosion, Glacier Erosion, Wind Erosion

Properties

Physical Properties

Hardness

4-6

Grain Size

Fine Grained

Medium to Coarse Grained

Fracture

Uneven

Not Available

Streak

White

Porosity

Highly Porous

Less Porous

Luster

Vitreous to Dull

Grainy, Pearly and Vitreous

Compressive Strength

243.80 N/mm²

175.00 N/mm²

Cleavage

Not Available

Toughness

Not Available

Specific Gravity

2.73

2.6-2.7

Transparency

Opaque

Density

1-1.8 g/cm³

2.6-2.8 g/cm³

Thermal Properties

Specific Heat Capacity

0.20 kJ/Kg K

0.79 kJ/Kg K

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen

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

Africa

Cameroon, Cape Verde, Chad, Djibouti, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Tanzania, Uganda

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

Europe

France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela

Others

Antarctica, Hawaii Islands

Not Yet Found

Deposits in Western Continents

North America

Canada, Costa Rica, Panama, USA

Canada, USA

South America

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador

Not Yet Found

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

Not Yet Found

Summary >>

<< Reserves

All about Ignimbrite and Granodiorite Properties

Know all about Ignimbrite and Granodiorite properties here. All properties of rocks are important as they define the type of rock and its application. Ignimbrite and Granodiorite belong to Igneous Rocks.Texture of Ignimbrite is Aphanitic whereas that of Granodiorite is Granular, Phaneritic. Ignimbrite appears Dull, Vesicular and Foilated and Granodiorite appears Veined or Pebbled. The luster of Ignimbrite is vitreous to dull while that of Granodiorite is grainy, pearly and vitreous. Ignimbrite is available in beige, black, brown, grey, pink, white colors whereas Granodiorite is available in black, grey, orange, pink, white colors. The commercial uses of Ignimbrite are cemetery markers, commemorative tablets, creating artwork and that of Granodiorite are curling, gemstone, laboratory bench tops, tombstones.