Rhyodacite and Wackestone

Rhyodacite

Wackestone

Wackestone and Rhyodacite

Definition

Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite

A carbonate rock which is matrix supported and contains over 10% allochems in a carbonate mud matrix.

History

Origin

USA

Unknown

Discoverer

Unknown

Etymology

Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite

From the English mud and stone, from low German mudde and stainaz

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

Family

Group

Volcanic

Not Applicable

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Earthy

Clastic

Color

Black to Grey, Dark Greenish - Grey

Black, Blue, Brown, Green, Grey, Orange, Red, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Skeletal

Rough and Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Flooring, Interior Decoration

Exterior Uses

As Building Stone, Garden Decoration

As Facing Stone, Garden Decoration, Roof Tiles

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping

Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts

Artifacts, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Cemetery Markers, Pottery

Types

Not Available

Marl, Shale and Argillite

Features

Available in Lots of Colors and Patterns

Available in Lots of Colors and Patterns, Smooth to touch, Very fine grained rock

Archaeological Significance

Monuments

Not Yet Used

Famous Monuments

Not Applicable

Sculpture

Not Yet Used

Used

Famous Sculptures

Not Applicable

Data Not Available

Pictographs

Used

Petroglyphs

Used

Figurines

Not Yet Used

Used

Fossils

Absent

Present

Formation

Rhyodacite 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.

Wackestone is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles settle down and are then compacted due to high temperature and pressure hence forming Wackestone.

Composition

Mineral Content

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

Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz

Compound Content

Ca, Fe, Potassium Oxide, NA, Potassium, Silicon Dioxide

Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

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

Not Applicable

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Chemical Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5.5-6

2-3

Grain Size

Fine Grained

Very fine-grained

Fracture

Conchoidal

Streak

Black

White

Porosity

Less Porous

Highly Porous

Luster

Greasy to Dull

Dull

Compressive Strength

200.50 N/mm²

225.00 N/mm²

Cleavage

Not Available

Perfect

Toughness

2.1

2.6

Specific Gravity

2.34-2.40

2.2-2.8

Transparency

Opaque

Density

Not Available

2.4-2.8 g/cm³

Thermal Properties

Specific Heat Capacity

1.12 kJ/Kg K

0.39 kJ/Kg K

Resistance

Heat Resistant

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Bangladesh, China, India, Russia

Africa

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

Ethiopia, Kenya, Morocco, South Africa, Tanzania

Europe

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

USA

South America

Not Yet Found

Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

Not Yet Found

New South Wales, New Zealand, Queensland, Victoria, Western Australia

Summary >>

<< Reserves

All about Rhyodacite and Wackestone Properties

Know all about Rhyodacite and Wackestone properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite belongs to Igneous Rocks while Wackestone belongs to Sedimentary Rocks.Texture of Rhyodacite is Earthy whereas that of Wackestone is Clastic. Rhyodacite appears Skeletal and Wackestone appears Rough and Dull. The luster of Rhyodacite is greasy to dull while that of Wackestone is dull. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Wackestone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Rhyodacite are cemetery markers, creating artwork and that of Wackestone are cemetery markers, pottery.