Perlite

perlite, also called pearlstone is a natural glass with concentric cracks such that the rock breaks into small pearl-like bodies. It is formed by the rapid cooling of viscous lava or magma.

Bibliography



• E. WM. Heinrich (1956): Microscopic Petrografy. Mcgraw-hill book company,inc
• David Shelley (1983): Igneous and metamorphic rocks under the microscope. Campman & Hall editori.
• Vernon, R. H. & Clarke, G. L. (2008): Principles of Metamorphic Petrology. Cambridge University Press
• Shelley D (1992): Igneous and Metamorphic Rocks under the Microscope: Classification, textures, microstructures and mineral preferred orientation
• Cox et al. (1979): The Interpretation of Igneous Rocks, George Allen and Unwin, London.

Photo
Foto
perliti0051(2).jpg

Concentric cracks (Perlite) in a Obsidian, Germany. PPL image, 2x (Field of view = 7mm)
perliti0051(4).jpg

Concentric cracks (Perlite) in a Obsidian, Germany. PPL image, 2x (Field of view = 7mm)
perliti0051(5).jpg

Concentric cracks (Perlite) in a Obsidian, Germany. PPL image, 2x (Field of view = 7mm)
perlitigrecia(2).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perlitigrecia(3).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perlitigrecia(4).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perlitigrecia(5).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perlitigrecia(6).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perlitigrecia(8).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perlitigrecia(9).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perlitigrecia(10).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perlitigrecia(11).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2012a(2).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2012a(3).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2012a(4).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2012a(5).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2012a(6).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2012a(7).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2012a(8).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2012a(9).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
frattureperlitiche(2).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
frattureperlitiche(3).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. XPL image, 10x (Field of view = 2mm)
perliti2013(2).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2013(3).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 2x (Field of view = 7mm)
perliti2013(4).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 2x (Field of view = 7mm)
perliti2013(10).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 2x (Field of view = 7mm)
perliti2013(11).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 2x (Field of view = 7mm)
perliti2013(5).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2013(6).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2013(7).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2013(8).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)
perliti2013(9).jpg

Concentric cracks (Perlite) in a Obsidian, Greece. PPL image, 10x (Field of view = 2mm)