Evaporite and Dacite

Evaporite

Dacite

Definition

A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution

Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite

History

Origin

USA

Romania and Moldova, Europe

Discoverer

Usiglio

Unknown

Etymology

From a sediment left after the evaporation

From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described

Class

Sedimentary Rocks

Igneous Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Not Applicable

Volcanic

Other Categories

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

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Earthy

Aphanitic to Porphyritic

Color

Colourless, Green, Grey, Silver, White

Bluish - Grey, Brown, Grey, Light to Dark Grey

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Stain Resistant

Wind Resistant

Yes

Acid Resistant

Appearance

Glassy, Vesicular and Foilated

Vesicular

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Decorative Aggregates, Entryways, Interior Decoration

Exterior Uses

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

As Building Stone, Paving Stone, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

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

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Not Yet Used

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

Used in the manufacture of Ceramic Powder, Used in the preparation of Sulfuric Acid and Silicon Diborite

Commemorative Tablets, Creating Artwork

Types

Not Available

Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite

Features

Generally rough to touch, Splintery, Veined

Host Rock for Lead, Is one of the oldest rock

Archaeological Significance

Monuments

Not Yet Used

Famous Monuments

Not Applicable

Sculpture

Not Yet Used

Famous Sculptures

Not Applicable

Pictographs

Used

Petroglyphs

Used

Figurines

Not Yet Used

Fossils

Present

Absent

Formation

Evaporite is water-soluble mineral sediment which forms from concentration and crystallization by evaporation from an aqueous solution.

Dacitic magma is formed by the subduction of young oceanic crust under a thick felsic continental plate. Further, the Oceanic crust is hydrothermally altered as quartz and sodium are added.

Composition

Mineral Content

Calcite, Cancrinite, Gypsum, Kyanite, Magnetite

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

Compound Content

CaMg(CO₃)₂, CaO, Calcium Sulfate, KCl, MgO, NaCl

Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

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

Burial Metamorphism, Cataclastic Metamorphism

Weathering

Yes

Types of Weathering

Not Applicable

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Not Applicable

Chemical Erosion

Properties

Physical Properties

Hardness

2-3

2-2.25

Grain Size

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

White

Porosity

Less Porous

Luster

Subvitreous to Dull

Compressive Strength

225.00 N/mm²

Not Available

Cleavage

Perfect

Toughness

Not Available

Specific Gravity

2.86-2.99

2.86-2.87

Transparency

Translucent

Density

2.8-2.9 g/cm³

2.77-2.771 g/cm³

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K

Resistance

Heat Resistant, Pressure Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Not Available

Not Yet Found

Africa

Not Available

Not Yet Found

Europe

United Kingdom

France, Greece, Romania, Scotland, Spain

Others

Not Yet Found

Deposits in Western Continents

North America

USA

South America

Colombia, Paraguay

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

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

New Zealand, South Australia, Western Australia

Summary >>

<< Reserves

All about Evaporite and Dacite Properties

Know all about Evaporite and Dacite properties here. All properties of rocks are important as they define the type of rock and its application. Evaporite belongs to Sedimentary Rocks while Dacite belongs to Igneous Rocks.Texture of Evaporite is Earthy whereas that of Dacite is Aphanitic to Porphyritic. Evaporite appears Glassy, Vesicular and Foilated and Dacite appears Vesicular. The luster of Evaporite and Dacite is subvitreous to dull. Evaporite is available in colourless, green, grey, silver, white colors whereas Dacite is available in bluish - grey, brown, grey, light to dark grey colors. The commercial uses of Evaporite are used in the manufacture of ceramic powder, used in the preparation of sulfuric acid and silicon diborite and that of Dacite are commemorative tablets, creating artwork.