Gneiss Facts
Gneiss Facts
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| Interesting Gneiss Facts: |
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| Gneiss is distinctive among other rocks that have bands because its minerals are not evenly distributed so the bands are various widths. |
| Under appropriate conditions, gneiss can be recrystallized into granite. |
| There is gneiss in Canada that date back 4 billion years. |
| Gneiss is so abundant on the lower level of the Earth's crust that if you drill anywhere on the surface, you will eventually strike gneiss. |
| Gneiss is said to be a German word meaning sparkling or bright. |
| Gneiss rock is further characterized by its alternating light and dark bands of minerals. |
| Gneiss forms from volcanic rock, shale, or granitic. |
| Quartz is typically abundantly found in gneiss. |
| The bands that form on gneiss rock are due to the various rocks that are a part of its make-up. |
| The use of the word gneiss dates back to the mid-1700s. |
| Gneiss rocks that originate as sedimentary rock are called paragneiss and those originating as igneous rock are called orthogneiss. |
| Limestone can change into calcareous gneiss which contains calcium carbonate. |
| Gneiss and schist are often confused but gneiss has more of a coarse texture and does not cleave. |
| Some of the oldest rocks found on Earth are gneisses. |
| Gneiss has also been used to construct buildings and gravestones. |
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