Definition
Metapelite is an old and currently not widely used field geological term for a clay rich fine-grained clastic sediment or sedimentary rock, i.e. mud or a mudstone
Hyaloclastite is an aggregate of fine, glassy debris formed by the sudden contact of hot, coherent magma and cold water or water-saturated sediment
Discoverer
Unknown
Unknown
Etymology
From Pelos or clay in Greek
From hyalo + -ite
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Group
Not Applicable
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Foliated
Pyroclastic
Color
Dark Greenish - Grey, Green, Light Green, Light Greenish Grey
Brown, Grey, Yellow
Durability
Durable
Durable
Interior Uses
Decorative Aggregates, Interior Decoration
Countertops, Decorative Aggregates, Homes, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings
Other Architectural Uses
Curbing
Curbing
Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate
Building houses or walls, Construction Aggregate
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts
Artifacts, Jewellery, Monuments, Sculpture
Commercial Uses
Commemorative Tablets, Creating Artwork
Cemetery Markers, Creating Artwork
Types
Not Available
Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff and Andesitic tuff.
Features
Easily splits into thin plates, It is One of the Oldest, Strongest and Hardest Rock
Always found as volcanic pipes over deep continental crust
Archaeological Significance
Monuments
Not Yet Used
Used
Famous Monuments
Not Applicable
Data Not Available
Sculpture
Not Yet Used
Used
Famous Sculptures
Not Applicable
Data Not Available
Figurines
Not Yet Used
Used
Formation
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Metapelite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Hyaloclastite is a type of Igneous rock is formed through the cooling and solidification of lava or magma.
Mineral Content
Albite, Chlorite, Quartz
Calcite, Chlorite
Compound Content
Aluminium Oxide, CaO, MgO
Hydrogen Sulfide, Sulfur Dioxide
Types of Metamorphism
Not Applicable
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion
Grain Size
Medium to Fine Coarse Grained
Fine Grained
Fracture
Fibrous
Not Available
Porosity
Highly Porous
Highly Porous
Luster
Earthy
Dull and Grainy
Cleavage
Not Available
Not Available
Toughness
Not Available
Not Available
Specific Gravity
3.4-3.7
Not Available
Transparency
Opaque
Opaque
Density
0-300 g/cm3
Not Available
Specific Heat Capacity
Not Available
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant
Deposits in Eastern Continents
Asia
Not Yet Found
Russia
Africa
Western Africa
South Africa
Europe
United Kingdom
Iceland
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
Not Available
Canada, USA
South America
Brazil, Colombia, Ecuador
Brazil, Colombia
Deposits in Oceania Continent
Australia
Central Australia, Western Australia
Not Yet Found
All about Metapelite and Hyaloclastite Properties
Know all about Metapelite and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Metapelite belongs to Metamorphic Rocks while Hyaloclastite belongs to Igneous Rocks.Texture of Metapelite is Foliated whereas that of Hyaloclastite is Pyroclastic. Metapelite appears Banded and Hyaloclastite appears Dull. The luster of Metapelite is earthy while that of Hyaloclastite is dull and grainy. Metapelite is available in dark greenish - grey, green, light green, light greenish grey colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Metapelite are commemorative tablets, creating artwork and that of Hyaloclastite are cemetery markers, creating artwork.