Felsite

Hawaiite

Felsite and Hawaiite

Felsite

Hawaiite

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1 Definition

1.1 Definition

Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition

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

1.2 History

1.2.1 Origin

Unknown

Hawaii Islands

1.2.2 Discoverer

Unknown

Joseph Iddings

1.3 Etymology

From English feldspar and -ite

From Hawaii Islands

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Volcanic

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Opaque Rock

2 Texture

2.1 Texture

Arborescent Patterned, Vitreous

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

2.2 Color

Black, Blue, Brown, Green, Orange, Red, Tan, Yellow

Black, Brown, Light to Dark Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Layered, Banded, Veined and Shiny

Dull and Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Flooring, Interior Decoration

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

3.1.2 Exterior Uses

Paving Stone, Garden Decoration

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

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

Arrowheads, Cutting Tool, Knives, Scrapers, Spear Points

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

3.2.2 Medical Industry

Surgery

Not Yet Used

3.3 Antiquity Uses

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

Mirror, Jewelry

Creating Artwork, Sea Defence

4 Types

4.1 Types

Not Available

4.2 Features

Available in Lots of Colors and Patterns, Clasts are smooth to touch, Splintery, Very fine grained rock

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

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Easter Island in the Polynesian Triangle, Pacific Ocean

4.3.3 Sculpture

Not Yet Used

4.3.4 Famous Sculptures

Not Applicable

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Not Yet Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Felsite 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.

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

5.2 Composition

5.2.1 Mineral Content

Feldspar, Iron Oxides

Olivine, Plagioclase, Pyroxene

5.2.2 Compound Content

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

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Impact Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Glacier Erosion, Water Erosion

Not Applicable

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5-5.56

1 7

6.1.2 Grain Size

Fine Grained

Not Applicable

6.1.3 Fracture

Conchoidal

6.1.4 Streak

White

Not Available

6.1.5 Porosity

Very Less Porous

Less Porous

6.1.6 Luster

Vitreous

Not Available

6.1.7 Compressive Strength

0.15 N/mm²37.40 N/mm²

0.15 450

6.1.8 Cleavage

Non-Existent

Not Applicable

6.1.9 Toughness

Not Available

6.1.10 Specific Gravity

2.6-2.7Not Available

0 8.4

6.1.11 Transparency

Translucent

Opaque

6.1.12 Density

2.6 g/cm³Not Available

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

0.92 kJ/Kg KNA

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

Afghanistan, Indonesia, Japan, Russia

India, Russia

7.1.2 Africa

Kenya

South Africa

7.1.3 Europe

Greece, Hungary, Iceland, Italy, Turkey

Iceland

7.1.4 Others

Not Yet Found

Hawaii Islands

7.2 Deposits in Western Continents

7.2.1 North America

Canada, Mexico, USA

Canada, USA

7.2.2 South America

Argentina, Chile, Ecuador, Peru

Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand

Not Yet Found

All about Felsite and Hawaiite Properties

Know all about Felsite and Hawaiite properties here. All properties of rocks are important as they define the type of rock and its application. Felsite and Hawaiite belong to Igneous Rocks.Texture of Felsite is Arborescent Patterned, Vitreous whereas that of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Felsite appears Layered, Banded, Veined and Shiny and Hawaiite appears Dull and Soft. The luster of Felsite is vitreous while that of Hawaiite is not available. Felsite is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Hawaiite is available in black, brown, light to dark grey colors. The commercial uses of Felsite are mirror, jewelry and that of Hawaiite are creating artwork, sea defence.