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
From English feldspar and -ite
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock
Arborescent Patterned, Vitreous
Black, Blue, Brown, Green, Orange, Red, Tan, Yellow
Layered, Banded, Veined and Shiny
Decorative Aggregates, Flooring, Interior Decoration
Paving Stone, Garden Decoration
Arrowheads, Cutting Tool, Knives, Scrapers, Spear Points
Available in Lots of Colors and Patterns, Clasts are smooth to touch, Splintery, Very fine grained rock
Archaeological Significance
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.
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Burial Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism
Biological Weathering, Chemical Weathering, Mechanical Weathering
Chemical Erosion, Glacier Erosion, Water Erosion
Heat Resistant, Impact Resistant
Deposits in Eastern Continents
Afghanistan, Indonesia, Japan, Russia
Greece, Hungary, Iceland, Italy, Turkey
Deposits in Western Continents
Argentina, Chile, Ecuador, Peru
Deposits in Oceania Continent
Learn more about Properties of Felsite
What is Felsite? In this section, we will learn more about properties of Felsite i.e. physical and thermal properties. Physical properties of Felsite include Color, Streak, Hardness, Structure, Cleavage, Fracture, Luster, Specific Gravity etc. The strength of Felsite is 0.15 N/mm2. Streak of Felsite is white while its cleavage is . Luster of Felsite is vitreous and its fracture is conchoidal. Felsite is translucent in nature. Know all about Felsite, What is Felsite, its composition, features, facts and reserves in next sections.
Know about Composition of Felsite
What is Felsite composed of? Get to know about composition of Felsite here. Felsite definition gives information about the Formation of Felsite and its composition.The composition of Felsite can be further divided into mineral and compound content. The mineral content of Felsite rock includes Feldspar, Iron Oxides and The compound content of Felsite rock includes Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide. Almost all rocks undergo transformation process. Know all about Felsite rock in next section.