Gossan

Talc carbonate

Gossan and Talc carbonate

Gossan

Talc carbonate

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1 Definition

1.1 Definition

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

Talc carbonate is nothing but a rock sequence or a mineral composition found in metamorphic ultramafic rocks.

1.2 History

1.2.1 Origin

Indonesia

China, USA, Middle east

1.2.2 Discoverer

Cornish Gossen

Unknown

1.3 Etymology

From Cornish gossen from gos, blood from Old Cornish guit

From medieval Latin, talcum

1.4 Class

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

1.5 Family

1.5.1 Group

Not Applicable

1.6 Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Rough, Sandy

Very Soft

2.2 Color

Brown, Brown- Black, Gold, Green, Rust

Colourless, Grey, White

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

81% Metamorphic Rocks Rocks have it !

✔ ✘

81% Metamorphic Rocks Rocks have it !

2.4.2 Scratch Resistant

✔ ✘

65% Metamorphic Rocks Rocks have it !

✔ ✘

65% Metamorphic Rocks Rocks have it !

2.4.3 Stain Resistant

✔ ✘

42% Metamorphic Rocks Rocks have it !

✔ ✘

42% Metamorphic Rocks Rocks have it !

2.4.4 Wind Resistant

✔ ✘

19% Metamorphic Rocks Rocks have it !

✔ ✘

19% Metamorphic Rocks Rocks have it !

2.4.5 Acid Resistant

✔ ✘

15% Metamorphic Rocks Rocks have it !

✔ ✘

15% Metamorphic Rocks Rocks have it !

2.5 Appearance

Dull and Banded

Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Countertops, Decorative Aggregates, Interior Decoration

Decorative Aggregates, Interior Decoration

3.1.2 Exterior Uses

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

Garden Decoration

3.1.3 Other Architectural Uses

Curbing

Powder

3.2 Industry

3.2.1 Construction Industry

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

Source of calcium

3.2.2 Medical Industry

Not Yet Used

Taken as a Supplement for Calcium or Magnesium

3.3 Antiquity Uses

Artifacts

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Commemorative Tablets, Gemstone

Manufacturing of baby powder

4 Types

4.1 Types

Translocated gossan and Leakage gossan

Not Available

4.2 Features

Clasts are smooth to touch, Easily splits into thin plates

Easily splits into thin plates, Generally rough to touch, Host Rock for Lead

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Not Yet Used

Used

4.3.4 Famous Sculptures

Not Applicable

Data Not Available

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

Not Used

4.3.7 Figurines

Not Yet Used

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

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

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Talc Carbonate is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

5.2 Composition

5.2.1 Mineral Content

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

Carbonate, Chlorite, Magnesium

5.2.2 Compound Content

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

CaO, Carbon Dioxide, MgO

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

50% Metamorphic Rocks Rocks have it !

✔ ✘

50% Metamorphic Rocks Rocks have it !

5.3.2 Types of Metamorphism

Not Applicable

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

5.3.3 Weathering

✔ ✘

65% Metamorphic Rocks Rocks have it !

✔ ✘

65% Metamorphic Rocks Rocks have it !

5.3.4 Types of Weathering

Not Applicable

5.3.5 Erosion

✔ ✘

77% Metamorphic Rocks Rocks have it !

✔ ✘

77% Metamorphic Rocks Rocks have it !

5.3.6 Types of Erosion

Chemical Erosion, Sea Erosion, Wind Erosion

Not Applicable

6 Properties

6.1 Physical Properties

6.1.1 Hardness

4-5

1-2

6.1.2 Grain Size

Fine to Medium Grained

Fine Grained

6.1.3 Fracture

Conchoidal

Flat

6.1.4 Streak

White to Grey

White

6.1.5 Porosity

Highly Porous

Less Porous

6.1.6 Luster

Metallic

Pearly

6.1.7 Compressive Strength

What Is Flint

⊕

▶

▼

Not Available

Rank: N/A (Overall)▶

250.00 N/mm²

Rank: 4 (Overall)▶

▲

What Is Obsidian

⊕

▶

175 (What Is Grani..)

◀ ▶ ADD ⊕

6.1.8 Cleavage

Not Available

Perfect

6.1.9 Toughness

Not Available

6.1.10 Specific Gravity

2.0

2.86

6.1.11 Transparency

Opaque

Translucent

6.1.12 Density

Not Available

2.8-2.9 g/cm³

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

What Is Banded ..

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▶

▼

0.24 kJ/Kg K

Rank: 24 (Overall)▶

0.92 kJ/Kg K

Rank: 10 (Overall)▶

▲

What Is Granulite

⊕

▶

1.09 (What Is Trave..)

◀ ▶ ADD ⊕

6.2.2 Resistance

Heat Resistant, Impact Resistant, Pressure Resistant

Heat Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

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

Not Yet Found

7.1.2 Africa

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

Ethiopia, Ghana, Western Africa

7.1.3 Europe

Albania, France, Germany, Great Britain, United Kingdom

England

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

7.2.2 South America

Brazil, Colombia, Ecuador

Argentina, Bolivia, Uruguay

7.3 Deposits in Oceania Continent

7.3.1 Australia

New South Wales, South Australia, Western Australia

Central Australia, South Australia, Western Australia

All about Gossan and Talc carbonate Properties

Know all about Gossan and Talc carbonate properties here. All properties of rocks are important as they define the type of rock and its application. Gossan and Talc carbonate belong to Metamorphic Rocks.Texture of Gossan is Rough, Sandy whereas that of Talc carbonate is Very Soft. Gossan appears Dull and Banded and Talc carbonate appears Soft. The luster of Gossan is metallic while that of Talc carbonate is pearly. Gossan is available in brown, brown- black, gold, green, rust colors whereas Talc carbonate is available in colourless, grey, white colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Talc carbonate are manufacturing of baby powder.