RHYOLITE SPECIMEN -POLISHED 66 GRAMS [MX956A ]
- 存貨單位
- 尺寸(毫米)
- x x mm
- 重量 (cts)
- 顏色
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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.
| 運輸商 | 運送至:國家 | 運送到世界其他地區 | 聯合運輸( 澳洲 ) | 聯合運輸(世界其他地區) |
|---|---|---|---|---|
| FedEx |
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| Registered Shipping |
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- 存貨單位
- 尺寸(毫米)
- x x mm
- 重量 (cts)
- 顏色
-
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.
| 運輸商 | 運送至:國家 | 運送到世界其他地區 | 聯合運輸( 澳洲 ) | 聯合運輸(世界其他地區) |
|---|---|---|---|---|
| FedEx |
|
|
|
|
| Registered Shipping |
|
|
|
|
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