Definition
Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock
Pantellerite is a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite
Origin
New Zealand
Strait of sicily
Discoverer
Unknown
Unknown
Etymology
From German which means hornstone
From Pantelleria, a volcanic island in the Strait of Sicily
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Granular, Platy
Eutaxitic
Color
Brown, Dark Greenish - Grey, Green, Reddish Brown
Dark Greenish - Grey
Durability
Durable
Durable
Appearance
Dull
Layered and Foliated
Interior Uses
Decorative Aggregates, Flooring, Homes, Interior Decoration
-
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
-
Other Architectural Uses
Curbing
-
Construction Industry
for Road Aggregate, Roadstone
-
Antiquity Uses
Artifacts, Monuments
Artifacts, Sculpture
Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork
Creating Artwork
Types
Biotite hornfels
Pantelleritic Ignimbrite
Features
Smooth to touch
High Fe content
Archaeological Significance
Formation
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Hornfels is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Pantellerite 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.
Mineral Content
Andalusite
Amphibole, Feldspar, Ilmenite
Compound Content
Fe, Mg
Al, Fe
Types of Metamorphism
-
Burial Metamorphism, Cataclastic Metamorphism
Types of Weathering
Biological Weathering
Biological Weathering, Chemical Weathering
Types of Erosion
Chemical Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Grain Size
Fine Grained
Fine Grained
Fracture
Conchoidal
Sub-conchoidal
Porosity
Highly Porous
Less Porous
Cleavage
Perfect
Conchoidal
Specific Gravity
3.4-3.9
-9999
Transparency
Opaque
Translucent to Opaque
Density
0.25-0.30 g/cm3
-9999 g/cm3
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant
Deposits in Eastern Continents
Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
China, India
Africa
Cameroon, East Africa, Tanzania, Western Africa
Angola, Egypt, Madagascar, Namibia, Nigeria
Europe
United Kingdom
Germany, Iceland, Ireland, Italy, Spain, United Kingdom
Deposits in Western Continents
North America
Canada, USA
Canada, USA
South America
Bolivia, Brazil, Colombia, Ecuador
Argentina, Bolivia, Brazil, Colombia, Ecuador
Deposits in Oceania Continent
Australia
New South Wales, New Zealand, Queensland, Western Australia
Central Australia, Queensland, Western Australia
Hornfels vs Pantellerite Characteristics
Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Hornfels vs Pantellerite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornfels and Properties of Pantellerite. Learn more about Hornfels vs Pantellerite in the next section. The interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Pantellerite include . Due to some exceptional properties of Hornfels and Pantellerite, they have various applications in construction industry. The uses of Hornfels in construction industry include For road aggregate, Roadstone and that of Pantellerite include .
More about Hornfels and Pantellerite
Here you can know more about Hornfels and Pantellerite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Pantellerite consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Pantellerite includes Amphibole, Feldspar, Ilmenite. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Pantellerite, the texture, color and appearance plays an important role in determining the type of rock. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas, Pantellerite is available in dark greenish - grey colors. Appearance of Hornfels is Dull and that of Pantellerite is Layered and Foliated. Properties of rock is another aspect for Hornfels vs Pantellerite. The hardness of Hornfels is 2-3 and that of Pantellerite is 6-7. The types of Hornfels are Biotite hornfels whereas types of Pantellerite are Pantelleritic Ignimbrite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Hornfels and Pantellerite is . The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Pantellerite is 0.84 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Hornfels is heat resistant, impact resistant, pressure resistant whereas Pantellerite is heat resistant.