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315.00 CTS SWIRL RHYOLITE ROUGH SLAB MEXICO [F4989]
- SKU
- Dimensiones (mm)
- x x mm
- Peso (cts)
- Certified Gemstones
- No
- Colores
-
QUALITY ROUGH
SWIRL RHYOLITE
This is a natural rough slab showing some amazing natural patterns ready for polishing
Mined in mexico
Please note we have taken the photos with the stone wet.
Weight 315.00 cts app
Size 67 x 67 x 8 mm app
RHYOLITE
Rhyolite can be considered as the extrusive equivalent to the plutonic granite rock, and consequently, outcrops of rhyolite may bear a resemblance to granite. Due to their high content of silica and low iron and magnesium contents, rhyolite melts are highly polymerized and form highly viscous lavas. They also occur as breccias or in volcanic plugs and dikes. Rhyolites that cool too quickly to grow crystals form a natural glass or vitrophyre, also called obsidian. Slower cooling forms microscopic crystals in the lava and results in textures such as flow foliations, spherulitic, nodular, and lithophysal structures. Some rhyolite is highly vesicular pumice. Many eruptions of rhyolite are highly explosive and the deposits may consist of fallout tephra/tuff or of ignimbrites.
- SKU
- Dimensiones (mm)
- x x mm
- Peso (cts)
- Certified Gemstones
- No
- Colores
-
QUALITY ROUGH
SWIRL RHYOLITE
This is a natural rough slab showing some amazing natural patterns ready for polishing
Mined in mexico
Please note we have taken the photos with the stone wet.
Weight 315.00 cts app
Size 67 x 67 x 8 mm app
RHYOLITE
Rhyolite can be considered as the extrusive equivalent to the plutonic granite rock, and consequently, outcrops of rhyolite may bear a resemblance to granite. Due to their high content of silica and low iron and magnesium contents, rhyolite melts are highly polymerized and form highly viscous lavas. They also occur as breccias or in volcanic plugs and dikes. Rhyolites that cool too quickly to grow crystals form a natural glass or vitrophyre, also called obsidian. Slower cooling forms microscopic crystals in the lava and results in textures such as flow foliations, spherulitic, nodular, and lithophysal structures. Some rhyolite is highly vesicular pumice. Many eruptions of rhyolite are highly explosive and the deposits may consist of fallout tephra/tuff or of ignimbrites.
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