1 Definition
1.1 Definition
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock
Ignimbrite is a volcanic rock consisting mainly of pumice fragments, formed by the consolidation of material deposited by pyroclastic flows
1.2 History
1.2.1 Origin
1.2.3 Discoverer
1.3 Etymology
From the locality in Essex County, Massachusetts,US
From Latin ignis fire + imber, imbr- shower of rain, storm cloud + -ite
1.4 Class
Igneous Rocks
Igneous Rocks
2.1.2 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
2.2 Family
2.2.1 Group
2.3 Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
3 Texture
3.1 Texture
3.2 Color
Dark Grey to Black
Beige, Black, Brown, Grey, Pink, White
3.3 Maintenance
3.4 Durability
3.4.1 Water Resistant
3.4.2 Scratch Resistant
3.4.3 Stain Resistant
3.4.4 Wind Resistant
3.4.5 Acid Resistant
3.5 Appearance
Banded
Dull, Vesicular and Foilated
4 Uses
4.1 Architecture
4.1.1 Interior Uses
Decorative Aggregates, Homes, Interior Decoration
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration
4.1.2 Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
As Building Stone, Garden Decoration, Office Buildings, Paving Stone
4.1.3 Other Architectural Uses
4.2 Industry
4.2.1 Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
Building houses or walls, Construction Aggregate
4.2.2 Medical Industry
Not Yet Used
Not Yet Used
4.3 Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Monuments, Sculpture, Small Figurines
4.4 Other Uses
4.4.1 Commercial Uses
Cemetery Markers, Commemorative Tablets, Jewelry, Sea Defence, Tombstones
Cemetery Markers, Commemorative Tablets, Creating Artwork
5 Types
5.1 Types
Not Available
Not Available
5.2 Features
Is one of the oldest rock, Smooth to touch
Always found as volcanic pipes over deep continental crust
5.3 Archaeological Significance
5.3.1 Monuments
5.3.2 Famous Monuments
Data Not Available
Data Not Available
5.3.3 Sculpture
5.3.4 Famous Sculptures
Data Not Available
Data Not Available
5.3.5 Pictographs
5.3.6 Petroglyphs
5.3.8 Figurines
5.4 Fossils
6 Formation
6.1 Formation
Essexite is a type of igneous rock, which is usually dark grey to black plutonic rock. For the formation of essexite, suitable magma with exact composition of K, Ba, Rb, Cs, Sr should be produced.
Ignimbrites are formed from very poorly sorted mixture of volcanic ash or tuff and pumice lapilli, commonly with scattered lithic fragments.
6.2 Composition
6.2.1 Mineral Content
Augite, Feldspar, Hornblende, Nepheline, Olivine, Plagioclase, Pyroxene
Apatite, Biotite, Calcite, Chlorite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz
6.2.3 Compound Content
Aluminium Oxide, Ba, Ca, Cs, Potassium, Rb, Sodium, Sr
Ca, NaCl
6.3 Transformation
6.3.1 Metamorphism
6.3.2 Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism
Burial Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
6.3.3 Weathering
6.3.4 Types of Weathering
Biological Weathering, Chemical Weathering
Biological Weathering, Chemical Weathering
6.3.5 Erosion
6.3.6 Types of Erosion
Coastal Erosion, Glacier Erosion, Water Erosion
Chemical Erosion, Coastal Erosion
7 Properties
7.1 Physical Properties
7.1.1 Hardness
7.1.2 Grain Size
Fine Grained
Fine Grained
7.1.3 Fracture
7.1.4 Streak
7.1.6 Porosity
Highly Porous
Highly Porous
7.1.8 Luster
Not Available
Vitreous to Dull
7.1.10 Compressive Strength
7.1.13 Cleavage
Not Available
Not Available
7.1.14 Toughness
7.1.15 Specific Gravity
7.2.2 Transparency
7.2.3 Density
Not Available1-1.8 g/cm3
0
1400
7.3 Thermal Properties
7.3.1 Specific Heat Capacity
8.3.2 Resistance
Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
9 Reserves
9.1 Deposits in Eastern Continents
9.1.1 Asia
India, Russia
Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen
9.1.2 Africa
South Africa
Cameroon, Cape Verde, Chad, Djibouti, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Tanzania, Uganda
9.1.3 Europe
Germany, Greece, Italy, Scotland, Turkey
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
9.1.4 Others
Greenland
Antarctica, Hawaii Islands
9.2 Deposits in Western Continents
9.2.1 North America
Canada, USA
Canada, Costa Rica, Panama, USA
9.2.2 South America
Brazil, Colombia, Venezuela
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador
9.3 Deposits in Oceania Continent
9.3.1 Australia
New Zealand, Queensland
Central Australia, Western Australia