Hornblendite and Trachyandesite

Hornblendite

Trachyandesite

Definition

Hornblendite is a type of igneous plutonic rock consisting mainly of amphibole hornblende and is a type of Amphibolite rock

Trachyandesite is an extrusive igneous rock.

History

Origin

Unknown

Indonesia

Discoverer

Unknown

Etymology

From German, Horn horn + blende

From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Volcanic

Other Categories

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Banded, Foliated, Massive

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

Color

Black, Brown, Green, Grey

Black, Brown, Light to Dark Grey

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Yes

Acid Resistant

Appearance

Foliated

Dull and Soft

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Entryways, Flooring, Homes, Hotels, Interior Decoration, Kitchens

Countertops, 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, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cobblestones, Construction Aggregate, for Road Aggregate, Landscaping, Production of Glass and Ceramics, Roadstone

Building houses or walls, Cobblestones, for Road Aggregate, Rail Track Ballast, Roadstone

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Sculpture, Small Figurines

Artifacts, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork

Creating Artwork, Pottery

Types

Hornblende Gabbro and Hornblende Peridotite

Basaltic Trachyandesite

Features

Clasts are smooth to touch, Matrix variable, Surfaces are often shiny

Has High structural resistance against erosion and climate, Very fine grained rock

Archaeological Significance

Monuments

Not Yet Used

Famous Monuments

Not Applicable

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Not Used

Used

Petroglyphs

Not Used

Used

Figurines

Used

Fossils

Absent

Formation

Hornblendite 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.

Trachyandesite 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

Amphibole, Calcite, Hornblade, Magnetite, Plagioclase, Wollastonite

Alkali feldspar, Biotite, Olivine, Plagioclase, Pyroxene, Sodic plagioclase

Compound Content

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

Not Applicable

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

6-7

4-5

Grain Size

Medium to Coarse Grained

Fine Grained

Fracture

Irregular to Conchoidal

Conchoidal

Streak

White to Grey

Light to dark brown

Porosity

Less Porous

Luster

Vitreous to Dull

Earthy

Compressive Strength

Not Available

37.40 N/mm²

Cleavage

Irregular

Perfect

Toughness

2.3

Specific Gravity

2.5

2.8-3

Transparency

Opaque

Density

2.85-3.07 g/cm³

2.9-3.1 g/cm³

Thermal Properties

Specific Heat Capacity

Not Available

0.84 kJ/Kg K

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Russia, Turkey

India, Russia

Africa

Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda

South Africa

Europe

Germany, Greece, Iceland, Norway, Poland

Iceland

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Deposits in Oceania Continent

Australia

South Australia, Western Australia

Not Yet Found

Summary >>

<< Reserves

All about Hornblendite and Trachyandesite Properties

Know all about Hornblendite and Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Hornblendite and Trachyandesite belong to Igneous Rocks.Texture of Hornblendite is Banded, Foliated, Massive whereas that of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Hornblendite appears Foliated and Trachyandesite appears Dull and Soft. The luster of Hornblendite is vitreous to dull while that of Trachyandesite is earthy. Hornblendite is available in black, brown, green, grey colors whereas Trachyandesite is available in black, brown, light to dark grey colors. The commercial uses of Hornblendite are cemetery markers, commemorative tablets, creating artwork and that of Trachyandesite are creating artwork, pottery.