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Hyaloclastite  and Chalk


Chalk and Hyaloclastite 


Definition

Definition
Hyaloclastite is an aggregate of fine, glassy debris formed by the sudden contact of hot, coherent magma and cold water or water-saturated sediment   
Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From hyalo +‎ -ite   
From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone   

Class
Igneous Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Soft Rock   

Family
  
  

Group
Volcanic   
Not Applicable   

Other Categories
Fine Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture

Texture
Pyroclastic   
Clastic or Non-Clastic   

Color
Brown, Grey, Yellow   
Grey, White, Yellow   

Maintenance
More   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
No   

Scratch Resistant
No   
No   

Stain Resistant
No   
No   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Dull   
Soft   

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Homes, Interior Decoration   
Decorative Aggregates, Homes, Interior Decoration   

Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings   
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration   

Other Architectural Uses
Curbing   
Powder   

Industry
  
  

Construction Industry
Building houses or walls, Construction Aggregate   
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, raw material for manufacture of quicklime and slaked lime, Source of calcium   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Jewellery, Monuments, Sculpture   
Artifacts, Monuments, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Cemetery Markers, Creating Artwork   
Alumina Refineries, Creating Artwork, Drawing on blackboards, Gymnasts, athletes and mountain climbers use for grip, In aquifers, Paper Industry, Production of Lime, Raw material for manufacture of quicklime, slaked lime, Soil Conditioner, Whiting, Whiting material in toothpaste, paint and paper   

Types

Types
Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff and Andesitic tuff.   
Not Available   

Features
Always found as volcanic pipes over deep continental crust   
Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Used   

Fossils
Absent   
Present   

Formation

Formation
Hyaloclastite is a type of Igneous rock is formed through the cooling and solidification of lava or magma.   
Chalk is formed from lime mud, which accumulates on the sea floor which is then transformed into rock by geological processes.   

Composition
  
  

Mineral Content
Calcite, Chlorite   
Calcite, Clay, Clay Minerals, Quartz, Sand   

Compound Content
Hydrogen Sulfide, Sulfur Dioxide   
Ca, NaCl, CaO   

Transformation
  
  

Metamorphism
Yes   
No   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism   
Not Applicable   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering   
Biological Weathering, Chemical Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Coastal Erosion   
Chemical Erosion, Coastal Erosion, Water Erosion   

Properties

Physical Properties
  
  

Hardness
1-2   
1   

Grain Size
Fine Grained   
Very fine-grained   

Fracture
Not Available   
Not Available   

Streak
Colorless   
White   

Porosity
Highly Porous   
Highly Porous   

Luster
Dull and Grainy   
Dull   

Cleavage
Not Available   
Non-Existent   

Toughness
Not Available   
1   

Specific Gravity
Not Available   
2.3-2.4   

Transparency
Opaque   
Opaque   

Density
Not Available   
2.49-2.50 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.90 kJ/Kg K   
12

Resistance
Heat Resistant   
Heat Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Russia   
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam   

Africa
South Africa   
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe   

Europe
Iceland   
England, France, Germany, Spain, United Kingdom   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, USA   

South America
Brazil, Colombia   
Colombia   

Deposits in Oceania Continent
  
  

Australia
Not Yet Found   
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula   

Summary >>
<< Reserves

All about Hyaloclastite  and Chalk Properties

Know all about Hyaloclastite  and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Hyaloclastite  belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks.Texture of Hyaloclastite  is Pyroclastic whereas that of Chalk is Clastic or Non-Clastic. Hyaloclastite  appears Dull and Chalk appears Soft. The luster of Hyaloclastite  is dull and grainy while that of Chalk is dull. Hyaloclastite  is available in brown, grey, yellow colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Hyaloclastite  are cemetery markers, creating artwork and that of Chalk are alumina refineries, creating artwork, drawing on blackboards, gymnasts, athletes and mountain climbers use for grip, in aquifers, paper industry, production of lime, raw material for manufacture of quicklime, slaked lime, soil conditioner, whiting, whiting material in toothpaste, paint and paper.

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