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
Talc carbonate is nothing but a rock sequence or a mineral composition found in metamorphic ultramafic rocks.
Origin
-
China, USA, Middle east
Discoverer
Unknown
Unknown
Etymology
From English feldspar and -ite
From medieval Latin, talcum
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Arborescent Patterned, Vitreous
Very Soft
Color
Black, Blue, Brown, Green, Orange, Red, Tan, Yellow
Grey, White
Durability
Durable
Durable
Scratch Resistant
Yes
Yes
Appearance
Layered, Banded, Veined and Shiny
Soft
Interior Uses
Decorative Aggregates, Flooring, Interior Decoration
Decorative Aggregates, Interior Decoration
Exterior Uses
Paving Stone, Garden Decoration
Garden Decoration
Other Architectural Uses
Curbing
Powder
Construction Industry
Arrowheads, Cutting Tool, Knives, Scrapers, Spear Points
Source of calcium
Medical Industry
Surgery
Taken as a Supplement for Calcium or Magnesium
Antiquity Uses
Artifacts
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines
Commercial Uses
Mirror, Jewelry
Manufacturing of baby powder
Types
Igneous rock
Sedimentary rock
Features
Available in Lots of Colors and Patterns, Clasts are smooth to touch, Splintery, Very fine grained rock
Easily splits into thin plates, Generally rough to touch, Host Rock for Lead
Archaeological Significance
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.
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.
Mineral Content
Feldspar, Iron Oxides
Carbonate, Chlorite, Magnesium
Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
CaO, Carbon Dioxide, MgO
Types of Metamorphism
Burial Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
-
Types of Erosion
Chemical Erosion, Glacier Erosion, Water Erosion
-
Grain Size
Fine Grained
Fine Grained
Porosity
Very Less Porous
Less Porous
Specific Gravity
2.6-2.7
2.86
Transparency
Translucent
Translucent
Density
2.6 g/cm3
2.8-2.9 g/cm3
Resistance
Heat Resistant, Impact Resistant
Heat Resistant, Wear Resistant
Deposits in Eastern Continents
Asia
Afghanistan, Indonesia, Japan, Russia
-
Africa
Kenya
Ethiopia, Ghana, Western Africa
Europe
Greece, Hungary, Iceland, Italy, Turkey
England
Deposits in Western Continents
North America
Canada, Mexico, USA
Canada, USA
South America
Argentina, Chile, Ecuador, Peru
Argentina, Bolivia, Uruguay
Deposits in Oceania Continent
Australia
New Zealand
Central Australia, South Australia, Western Australia
All about Felsite and Talc carbonate Properties
Know all about Felsite and Talc carbonate properties here. All properties of rocks are important as they define the type of rock and its application. Felsite belongs to Igneous Rocks while Talc carbonate belongs to Metamorphic Rocks.Texture of Felsite is Arborescent Patterned, Vitreous whereas that of Talc carbonate is Very Soft. Felsite appears Layered, Banded, Veined and Shiny and Talc carbonate appears Soft. The luster of Felsite is vitreous while that of Talc carbonate is pearly. Felsite is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Talc carbonate is available in grey, white colors. The commercial uses of Felsite are mirror, jewelry and that of Talc carbonate are manufacturing of baby powder.