RHYOLITE SPECIMEN -POLISHED 66 GRAMS [MX956A ]
- SKU
- Dimenzije (mm)
- x x mm
- Težina (cts)
- Boje
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RHYOLITE FROM MT MAY
QUEENSLAND- RAINFOREST JASPER
NATURAL
POLISHED ONE SIDE
WEIGHT 66 GRAMS APP
SIZE 80 X 55 X7 MM APP
Rhyolite can be considered as the extrusive equivalent to the plutonic granite rock, and consequently, outcroppings of it often 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 can 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 or of ignimbrites.
- SKU
- Dimenzije (mm)
- x x mm
- Težina (cts)
- Boje
-
RHYOLITE FROM MT MAY
QUEENSLAND- RAINFOREST JASPER
NATURAL
POLISHED ONE SIDE
WEIGHT 66 GRAMS APP
SIZE 80 X 55 X7 MM APP
Rhyolite can be considered as the extrusive equivalent to the plutonic granite rock, and consequently, outcroppings of it often 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 can 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 or of ignimbrites.
Pružatelj usluge dostave | Dostava u Australia | Dostava u ostatak svijeta |
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FedEx | $12.00 / :dani dani | $39.00 / :dani dani |
:zemlja
FedEx je snižen na $12.00 na narudžbe s 2 ili više artikala
Ostatak svijeta
FedEx je snižen na $39.00 na narudžbe s 2 ili više artikala
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Registered Shipping | $9.00 / :dani dani | $16.00 / :dani dani |
:zemlja
Registered Shipping je snižen na $9.00 na narudžbe s 2 ili više artikala
Ostatak svijeta
Registered Shipping je snižen na $16.00 na narudžbe s 2 ili više artikala
|
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Pozitivan
Beautiful agate piece , and as always fast efficient service from Sedagems
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Pozitivan
Nice
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Pozitivan
Gorgeous stones, very happy
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Pozitivan
Gorgeous stone, very happy
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Pozitivan
Beautiful specimen