Hornblendite

Andesite

Hornblendite and Andesite

Hornblendite

Andesite

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Definition

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

Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava

History

Origin

North America

Discoverer

Unknown

Theodor von Gümbel

Etymology

From German, Horn horn + blende

From Andes mountains, where it is found in abundance

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Volcanic

Other Categories

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Banded, Foliated, Massive

Aphanitic to Porphyritic

Color

Black, Brown, Green, Grey

Bluish - Grey, Grey, Pink, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Foliated

Dull and Soft

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens

Exterior Uses

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

Office Buildings, Roof Tiles

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

Cobblestones, Construction Aggregate, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork

Commemorative Tablets, Creating Artwork

Types

Hornblende Gabbro and Hornblende Peridotite

Icelandite

Features

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

Generally rough to touch, High silica content, Is one of the oldest rock

Archaeological Significance

Monuments

Famous Monuments

Middle of the Earth in Ecuador

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

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.

Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.

Composition

Mineral Content

Amphibole, Calcite, Hornblade, Magnetite, Plagioclase, Wollastonite

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon

Compound Content

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

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

6-77

1 7

👆🏻

Grain Size

Medium to Coarse Grained

Very fine-grained

Fracture

Irregular to Conchoidal

Uneven

Streak

White to Grey

White

Porosity

Less Porous

Luster

Vitreous to Dull

Vitreous

Compressive Strength

250.00 N/mm²225.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

2.3

1.1

Specific Gravity

2.52.5-2.8

0 8.4

👆🏻

Transparency

Opaque

Density

2.85-3.07 g/cm³2.11-2.36 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K2.39 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Russia, Turkey

India, Indonesia, Japan, Nepal, South Korea

Africa

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

Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania

Europe

Germany, Greece, Iceland, Norway, Poland

Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom

Others

Deposits in Western Continents

North America

Canada, USA

Mexico, USA

South America

Brazil

Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

South Australia, Western Australia

New South Wales, New Zealand, Western Australia

All about Hornblendite and Andesite Properties

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