Nephelinite

Breccia

Nephelinite and Breccia

Nephelinite

Breccia

Add ⊕

Definition

Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).

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

History

Origin

Brazil

England

Discoverer

Unknown

Etymology

from French néphéline, from Greek nephelē

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

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Aphanitic

Brecciated, Clastic

Color

Black, Brown, Green, Grey, White

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

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Skeletal

Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration

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

Exterior Uses

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

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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate

As Dimension Stone, Construction Aggregate, Landscaping, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Sculpture

Other Uses

Commercial Uses

Creating Artwork, Soil Conditioner, Source of Magnesia (MgO)

Creating Artwork, Gemstone, Jewelry

Types

Peralkaline Nephelinite

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

Features

Host Rock for Lead

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

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

Nephelinite 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.

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.

Composition

Mineral Content

Clinopyroxene, Nepheline, Plagioclase

Calcite, Clay, Feldspar, Phosphates, Quartz, Silica

Compound Content

Ca, CaO, Carbon, Cl, MgO

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Contact Metamorphism

Burial Metamorphism, Cataclastic Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion

Properties

Physical Properties

Hardness

6.57

1 7

👆🏻

Grain Size

Fine Grained

Medium to Coarse Grained

Fracture

Flat

Uneven

Streak

White

Porosity

Less Porous

Luster

Vitreous to Metallic

Dull to Pearly

Compressive Strength

35.00 N/mm²180.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

2.7

Specific Gravity

2.4-2.92.86-2.87

0 8.4

👆🏻

Transparency

Opaque

Density

2.5-3 g/cm³0 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.88 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Japan

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

Africa

Rwanda, Tanzania

Namibia, Nigeria, South Africa

Europe

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

Others

Hawaii Islands

Greenland

Deposits in Western Continents

North America

Canada, USA

Barbados, Canada, Mexico, Panama, USA

South America

Colombia

Brazil

Deposits in Oceania Continent

Australia

New South Wales, New Zealand

All about Nephelinite and Breccia Properties

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