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Hornfels
Hornfels

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Oolite



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Hornfels vs Oolite

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1 Definition
1.1 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
Oolite is a sedimentary rock formed from ooids, spherical grains which are composed of concentric layers of calcite
1.2 History
1.2.1 Origin
New Zealand
Unknown
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From German which means hornstone
From oo- + -lite, after German Oolit. A rock consisting of fine grains of carbonate of lime
1.4 Class
Metamorphic Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Volcanic
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Granular, Platy
Clastic or Non-Clastic
2.2 Color
Brown, Dark Greenish - Grey, Green, Reddish Brown
Black, Blue, Brown, Cream, Green, Grey, Pink, Red, Silver, White, Yellow
2.3 Maintenance
Less
Less
2.4 Durability
Durable
Durable
2.4.1 Water Resistant
81% Metamorphic Rocks Rocks have it !
59% Sedimentary Rocks Rocks have it !
2.4.2 Scratch Resistant
65% Metamorphic Rocks Rocks have it !
62% Sedimentary Rocks Rocks have it !
2.4.3 Stain Resistant
42% Metamorphic Rocks Rocks have it !
43% Sedimentary Rocks Rocks have it !
2.4.4 Wind Resistant
19% Metamorphic Rocks Rocks have it !
38% Sedimentary Rocks Rocks have it !
2.4.5 Acid Resistant
15% Metamorphic Rocks Rocks have it !
22% Sedimentary Rocks Rocks have it !
2.5 Appearance
Dull
Rounded and Rough
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Flooring, Homes, Interior Decoration
Decorative Aggregates, Flooring, Interior Decoration
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
3.1.3 Other Architectural Uses
Curbing
Not Yet Used
3.2 Industry
3.2.1 Construction Industry
for Road Aggregate, Roadstone
Cement Manufacture, Cobblestones, Landscaping
3.2.2 Medical Industry
Not Yet Used
Not Yet Used
3.3 Antiquity Uses
Artifacts, Monuments
Artifacts
3.4 Other Uses
3.4.1 Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork
Creating Artwork, Jewelry, Used in aquariums
4 Types
4.1 Types
Biotite hornfels
Not Available
4.2 Features
Smooth to touch
Available in lots of colors, Generally rough to touch, Very fine grained rock
4.3 Archaeological Significance
4.3.1 Monuments
Used
Not Yet Used
4.3.2 Famous Monuments
Data Not Available
Not Applicable
4.3.3 Sculpture
Not Yet Used
Not Yet Used
4.3.4 Famous Sculptures
Not Applicable
Not Applicable
4.3.5 Pictographs
Used
Used
4.3.6 Petroglyphs
Used
Used
4.3.7 Figurines
Not Yet Used
Not Yet Used
4.4 Fossils
Absent
Present
5 Formation
5.1 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.
Oolites form when layers of calcite are deposited around a sand grain or fossil piece and are rolled around in calm water, which makes them round.
5.2 Composition
5.2.1 Mineral Content
Andalusite
Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt
5.2.2 Compound Content
Fe, Mg
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, FeO, MgO
5.3 Transformation
5.3.1 Metamorphism
50% Metamorphic Rocks Rocks have it !
19% Sedimentary Rocks Rocks have it !
5.3.2 Types of Metamorphism
Not Applicable
Not Applicable
5.3.3 Weathering
65% Metamorphic Rocks Rocks have it !
78% Sedimentary Rocks Rocks have it !
5.3.4 Types of Weathering
Biological Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
5.3.5 Erosion
77% Metamorphic Rocks Rocks have it !
86% Sedimentary Rocks Rocks have it !
5.3.6 Types of Erosion
Chemical Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
2-3
3-4
6.1.2 Grain Size
Fine Grained
Fine Grained
6.1.3 Fracture
Conchoidal
Conchoidal
6.1.4 Streak
Unknown
White
6.1.5 Porosity
Highly Porous
Less Porous
6.1.6 Luster
Shiny
Pearly to Shiny
6.1.7 Compressive Strength
Flint
5.80 N/mm2
Rank: 31 (Overall)
Not Available
Rank: N/A (Overall)
Obsidian
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6.1.8 Cleavage
Perfect
Non-Existent
6.1.9 Toughness
Not Yet Found
1
6.1.10 Specific Gravity
3.4-3.9
Not Available
6.1.11 Transparency
Opaque
Opaque
6.1.12 Density
0.25-0.30 g/cm3
Not Available
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
Banded iron for..
0.84 kJ/Kg K
Rank: 15 (Overall)
Not Available
Rank: N/A (Overall)
Granulite
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6.2.2 Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant, Wear Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
7.1.2 Africa
Cameroon, East Africa, Tanzania, Western Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
7.1.3 Europe
United Kingdom
United Kingdom
7.1.4 Others
Not Yet Found
Not Yet Found
7.2 Deposits in Western Continents
7.2.1 North America
Canada, USA
USA
7.2.2 South America
Bolivia, Brazil, Colombia, Ecuador
Colombia
7.3 Deposits in Oceania Continent
7.3.1 Australia
New South Wales, New Zealand, Queensland, Western Australia
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula

Hornfels vs Oolite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Hornfels and Oolite Reserves. 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. Oolite is a sedimentary rock formed from ooids, spherical grains which are composed of concentric layers of calcite. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Hornfels vs Oolite information and Hornfels vs Oolite characteristics in the upcoming sections.

Hornfels vs Oolite 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 Oolite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornfels and Properties of Oolite. Learn more about Hornfels vs Oolite in the next section. The interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Oolite include Decorative aggregates, Flooring and Interior decoration. Due to some exceptional properties of Hornfels and Oolite, they have various applications in construction industry. The uses of Hornfels in construction industry include For road aggregate, Roadstone and that of Oolite include Cement manufacture, Cobblestones, Landscaping.

More about Hornfels and Oolite

Here you can know more about Hornfels and Oolite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Oolite consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Oolite includes Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Oolite, 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, Oolite is available in black, blue, brown, cream, green, grey, pink, red, silver, white, yellow colors. Appearance of Hornfels is Dull and that of Oolite is Rounded and Rough. Properties of rock is another aspect for Hornfels vs Oolite. The hardness of Hornfels is 2-3 and that of Oolite is 3-4. The types of Hornfels are Biotite hornfels whereas types of Oolite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Hornfels is unknown while that of Oolite is white. The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Oolite is Not Available. 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 Oolite is heat resistant, wear resistant.