RHYOLITE SPECIMEN -POLISHED 66 GRAMS [MX956A ]
- SKU
- 寸法(mm)
- x x mm
- 重さ (CT)
- 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.
| 配送業者 | 配送先オーストラリア | その他の国への配送 | 同梱配送 ( オーストラリア ) | 同梱配送(その他の地域) |
|---|---|---|---|---|
| FedEx |
|
|
|
|
| Registered Shipping |
|
|
|
|
- SKU
- 寸法(mm)
- x x mm
- 重さ (CT)
- 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.
| 配送業者 | 配送先オーストラリア | その他の国への配送 | 同梱配送 ( オーストラリア ) | 同梱配送(その他の地域) |
|---|---|---|---|---|
| FedEx |
|
|
|
|
| Registered Shipping |
|
|
|
|
-
ポジティブA very beautiful tanzanite. Fast delivery. Secure packaging. I always enjoy buying here. Thank you very much.
-
ポジティブReally great specimen
-
ポジティブReally cool
-
ポジティブGreat pom growth!
-
ポジティブLove this