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
  
Rhomb-porphyry is a porphyritic igneous rock with abundant wedge or lens shaped anorthoclase or feldspar phenocrysts
  
History
  
  
Discoverer
Unknown
  
Unknown
  
Etymology
From hyalo + -ite
  
From Latin term that means purple
  
Class
Igneous Rocks
  
Igneous Rocks
  
Sub-Class
Durable Rock, Soft Rock
  
Durable Rock, Medium Hardness Rock
  
Family
  
  
Group
Volcanic
  
Volcanic
  
Other Categories
Fine Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Pyroclastic
  
Aphanitic to Porphyritic
  
Color
Brown, Grey, Yellow
  
Black, Brown, Colourless, Green, Grey, Pink, White
  
Maintenance
More
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
No
  
Yes
  
Scratch Resistant
No
  
No
  
Stain Resistant
No
  
Yes
  
Wind Resistant
No
  
Yes
  
Acid Resistant
No
  
No
  
Appearance
Dull
  
Rough
  
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, Office Buildings
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
Building houses or walls, Construction Aggregate
  
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
  
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
  
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Metallurgical Flux, Soil Conditioner, Source of Magnesia (MgO)
  
Types
Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff and Andesitic tuff.
  
Not Available
  
Features
Always found as volcanic pipes over deep continental crust
  
Host Rock for Lead
  
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
  
Absent
  
Formation
Hyaloclastite is a type of Igneous rock is formed through the cooling and solidification of lava or magma.
  
Rhomb-porphyry 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.
  
Composition
  
  
Mineral Content
Calcite, Chlorite
  
Alkali feldspar, Biotite, Plagioclase, Pyroxene
  
Compound Content
Hydrogen Sulfide, Sulfur Dioxide
  
CaO, Cl, MgO
  
Transformation
  
  
Metamorphism
Yes
  
Yes
  
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism
  
Impact Metamorphism
  
Weathering
Yes
  
Yes
  
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Erosion
Yes
  
Yes
  
Types of Erosion
Chemical Erosion, Coastal Erosion
  
Chemical Erosion, Coastal Erosion, Glacier Erosion, Water Erosion
  
Physical Properties
  
  
Hardness
1-2
  
5-5.5
  
Grain Size
Fine Grained
  
Fine Grained
  
Fracture
Not Available
  
Conchoidal
  
Streak
Colorless
  
White
  
Porosity
Highly Porous
  
Very Less Porous
  
Luster
Dull and Grainy
  
Subvitreous to Dull
  
Compressive Strength
Not Available
  
310.00 N/mm
2
  
2
Cleavage
Not Available
  
Perfect
  
Toughness
Not Available
  
2.7
  
Specific Gravity
Not Available
  
2.86
  
Transparency
Opaque
  
Translucent
  
Density
Not Available
  
2.8-2.9 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
Not Available
  
0.92 kJ/Kg K
  
10
Resistance
Heat Resistant
  
Heat Resistant, Pressure Resistant
  
Deposits in Eastern Continents
  
  
Asia
Russia
  
Not Yet Found
  
Africa
South Africa
  
Not Yet Found
  
Europe
Iceland
  
Bulgaria
  
Others
Not Yet Found
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
USA
  
South America
Brazil, Colombia
  
Not Yet Found
  
Deposits in Oceania Continent
  
  
Australia
Not Yet Found
  
Not Yet Found
  
All about Hyaloclastite and Rhomb Porphyry Properties
Know all about Hyaloclastite and Rhomb Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Hyaloclastite and Rhomb Porphyry belong to Igneous Rocks.Texture of Hyaloclastite is Pyroclastic whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Hyaloclastite appears Dull and Rhomb Porphyry appears Rough. The luster of Hyaloclastite is dull and grainy while that of Rhomb Porphyry is subvitreous to dull. Hyaloclastite is available in brown, grey, yellow colors whereas Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Hyaloclastite are cemetery markers, creating artwork and that of Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo).