Syenite and Hawaiite

Syenite

Hawaiite

Definition

Syenite is a coarse-grained igneous rock which is composed mainly of alkali feldspar and various ferromagnesian minerals

Hawaiite is volcanic rock that resembles basalt. It is an olivine basalt with intermediate composition between alkali olivine and mugearite

History

Origin

Unknown

Hawaii Islands

Discoverer

Unknown

Joseph Iddings

Etymology

From French syénite, from Latin Syenites (lapis ) (stone) of Syene

From Hawaii Islands

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Volcanic

Other Categories

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

Opaque Rock

Texture

Earthy

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

Color

Brown, Buff, Cream, Green, Grey, Pink, White

Black, Brown, Light to Dark Grey

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Banded and Foilated

Dull and Soft

Uses

Architecture

Interior Uses

Flooring, Homes, Hotels, Interior Decoration

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

Exterior Uses

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, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Creating Artwork, Sea Defence

Types

Shonkinite

Not Available

Features

Available in Lots of Colors and Patterns, Is one of the oldest rock, Matrix variable

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

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Easter Island in the Polynesian Triangle, Pacific Ocean

Sculpture

Used

Not Yet Used

Famous Sculptures

Data Not Available

Not Applicable

Pictographs

Used

Petroglyphs

Used

Figurines

Used

Not Yet Used

Fossils

Absent

Formation

Syenites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.

Hawaiite is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes and reach the Earth's surface.

Composition

Mineral Content

Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

Olivine, Plagioclase, Pyroxene

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

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

Impact Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering

Erosion

Yes

Types of Erosion

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

Not Applicable

Properties

Physical Properties

Hardness

5.5-6

Grain Size

Medium to Fine Coarse Grained

Not Applicable

Fracture

Not Available

Conchoidal

Streak

White

Not Available

Porosity

Less Porous

Luster

Subvitreous to Dull

Not Available

Compressive Strength

150.00 N/mm²

37.40 N/mm²

Cleavage

Perfect

Not Applicable

Toughness

Not Available

Specific Gravity

2.6-2.7

Not Available

Transparency

Opaque

Density

2.6-2.8 g/cm³

Not Available

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K

Not Available

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

India, Russia

Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

South Africa

Europe

Bulgaria, England, Germany, Norway, Romania, Switzerland

Iceland

Others

Not Yet Found

Hawaii Islands

Deposits in Western Continents

North America

USA

Canada, USA

South America

Brazil, Chile

Brazil

Deposits in Oceania Continent

Australia

New Zealand, Queensland, South Australia, Western Australia

Not Yet Found

Summary >>

<< Reserves

All about Syenite and Hawaiite Properties

Know all about Syenite and Hawaiite properties here. All properties of rocks are important as they define the type of rock and its application. Syenite and Hawaiite belong to Igneous Rocks.Texture of Syenite is Earthy whereas that of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Syenite appears Banded and Foilated and Hawaiite appears Dull and Soft. The luster of Syenite is subvitreous to dull while that of Hawaiite is not available. Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Hawaiite is available in black, brown, light to dark grey colors. The commercial uses of Syenite are cemetery markers, creating artwork and that of Hawaiite are creating artwork, sea defence.