Litchfieldite

Gossan

Litchfieldite and Gossan

Litchfieldite

Gossan

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Definition

Litchfieldite is a rare igneous rock which is coarse-grained, foliated and a variety of nepheline syenite, sometimes also called as nepheline syenite gneiss or gneissic nepeheline syenite

Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.

History

Origin

USA

Indonesia

Discoverer

Bayley

Cornish Gossen

Etymology

From its occurrence at Litchfield, Maine, USA

From Cornish gossen from gos, blood from Old Cornish guit

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Granular

Rough, Sandy

Color

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

Brown, Brown- Black, Gold, Green, Rust

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Banded and Foilated

Dull and Banded

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Flooring, Interior Decoration

Countertops, Decorative Aggregates, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

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, Production of Glass and Ceramics

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

Other Uses

Commercial Uses

Creating Artwork

Cemetery Markers, Commemorative Tablets, Gemstone

Types

Borolanite and Litchfieldite

Translocated gossan and Leakage gossan

Features

Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock

Clasts are smooth to touch, Easily splits into thin plates

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Litchfieldite 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.

Earth movements can cause rocks to be either deeply buried or squeezed and hence the rocks are heated and put under great pressure.

Composition

Mineral Content

Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite

Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon

Compound Content

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

Aluminium Oxide, CaO, Fe, FeO, Silicon Dioxide, Sulphur

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5.5-64-5

1 7

👆🏻

Grain Size

Coarse Grained

Fine to Medium Grained

Fracture

Conchoidal to Uneven

Conchoidal

Streak

White

White to Grey

Porosity

Less Porous

Highly Porous

Luster

Greasy to Dull

Metallic

Compressive Strength

150.00 N/mm²-

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

2.62.0

0 8.4

👆🏻

Transparency

Translucent to Opaque

Opaque

Density

2.6 g/cm³-9999 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K0.24 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Indonesia, Russia, Singapore, South Korea

Africa

South Africa

Cape Verde, Ethiopia, Ghana, South Africa, Western Africa

Europe

Finland, Norway, Portugal

Albania, France, Germany, Great Britain, United Kingdom

Others

Deposits in Western Continents

North America

Canada

Canada, USA

South America

Brazil

Brazil, Colombia, Ecuador

Deposits in Oceania Continent

Australia

New South Wales, South Australia, Western Australia

All about Litchfieldite and Gossan Properties

Know all about Litchfieldite and Gossan properties here. All properties of rocks are important as they define the type of rock and its application. Litchfieldite belongs to Igneous Rocks while Gossan belongs to Metamorphic Rocks.Texture of Litchfieldite is Granular whereas that of Gossan is Rough, Sandy. Litchfieldite appears Banded and Foilated and Gossan appears Dull and Banded. The luster of Litchfieldite is greasy to dull while that of Gossan is metallic. Litchfieldite is available in brown, buff, cream, green, grey, pink, white colors whereas Gossan is available in brown, brown- black, gold, green, rust colors. The commercial uses of Litchfieldite are creating artwork and that of Gossan are cemetery markers, commemorative tablets, gemstone.