Breccia

Tephrite

Breccia and Tephrite

Breccia

Tephrite

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Definition

Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material

Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock

History

Origin

England

Germany

Discoverer

Unknown

Van Tooren

Etymology

From Italian, literally gravel, Germanic origin and related to break

From Greek tephra, ashes from Indo-European base, to burn

Class

Sedimentary Rocks

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Volcanic

Other Categories

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Brecciated, Clastic

Aphanitic to Porphyritic

Color

Beige, Black, Blue, Brown, Buff, Green, Grey, Orange, Pink, Purple, Red, Rust, White, Yellow

Black, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Layered, Banded, Veined and Shiny

Vesicular

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration

Decorative Aggregates, Flooring, Homes, Interior Decoration

Exterior Uses

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

As Building Stone, As Facing Stone, Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Construction Aggregate, Landscaping, Roadstone

Landscaping

Medical Industry

Antiquity Uses

Artifacts, Sculpture

Other Uses

Commercial Uses

Creating Artwork, Gemstone, Jewelry

Production of Lime, Soil Conditioner

Types

Collapse Breccia, Fault Breccia, Flow Breccia, Pyroclastic Breccia, Igneous Breccia and Impact Breccia

Igneous rock

Features

Available in Lots of Colors and Patterns, Clasts are smooth to touch

Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Absent

Formation

Breccia is a clastic sedimentary rock which is composed of broken fragments of minerals or rock which are cemented together by a fine-grained matrix and it forms where broken, angular fragments of rock or mineral debris accumulate.

Tephrite 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, Clay, Feldspar, Phosphates, Quartz, Silica

Alkali feldspar, Nepheline, Plagioclase, Pyroxene

Compound Content

Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, Potassium Oxide, Sodium Oxide, Silicon Dioxide, Titanium Dioxide

CaO, Carbon Dioxide, MgO, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion

Properties

Physical Properties

Hardness

76.5

1 7

👆🏻

Grain Size

Medium to Coarse Grained

Medium to Fine Coarse Grained

Fracture

Uneven

Streak

White

Bluish Black

Porosity

Less Porous

Very Less Porous

Luster

Dull to Pearly

Subvitreous to Dull

Compressive Strength

180.00 N/mm²90.00 N/mm²

0.15 450

👆🏻

Cleavage

Crenulation and Pervasive

Toughness

2.4

Specific Gravity

2.86-2.872.86

0 8.4

👆🏻

Transparency

Opaque

Density

0 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Kazakhstan, Mongolia, Russia, South Korea, Uzbekistan

Africa

Namibia, Nigeria, South Africa

Namibia, Uganda

Europe

Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom

Germany, Hungary, Italy, Portugal, Spain

Others

Greenland

Deposits in Western Continents

North America

Barbados, Canada, Mexico, Panama, USA

USA

South America

Brazil

Deposits in Oceania Continent

Australia

New South Wales, New Zealand

New Zealand, Western Australia

All about Breccia and Tephrite Properties

Know all about Breccia and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Breccia belongs to Sedimentary Rocks while Tephrite belongs to Igneous Rocks.Texture of Breccia is Brecciated, Clastic whereas that of Tephrite is Aphanitic to Porphyritic. Breccia appears Layered, Banded, Veined and Shiny and Tephrite appears Vesicular. The luster of Breccia is dull to pearly while that of Tephrite is subvitreous to dull. Breccia and Tephrite are available in beige, black, blue, brown, buff, green, grey, orange, pink, purple, red, rust, white, yellow colors. The commercial uses of Breccia are creating artwork, gemstone, jewelry and that of Tephrite are production of lime, soil conditioner.