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Being an igneous rock, a pegmatite can have numerous "origins". A pegmatite is thecoarsest of the igneous rock types, with the largest crystals, resulting from a very slow rate of cooling. At the Boomer Mine in the South Park of Colorado, a single beryl (beryllium aluminum silicate) crystal was mined from the pegmatite rock there which was six feet in diameter and nearly nine feet long. The Boomer Mine pegmatite is part of the Pikes Peak batholith. Unfortunately, it was uncovered on a weekend when the resident geologist was off work and the miners put the crystal into the mills crusher!! It should have gone to the Smithsonian Institute. You may know beryl as the semiprecious stone "aquamarine".
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoThey form when molten igneous masses are cooling. The partially solidified rock is unstable and can sometimes crack. A pegmatite forms when the remaining molten material within the rock is squeezed into that crack. In favorable conditions, these sites can produce rare and valuable minerals and gems.
Wiki User
∙ 15y agoPegmatites are a result of magmatism and metamorphism associated with plutonic intrusions.
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Fossils are found only in .?
Sedimentary rocks
What is the name of rocks without form?
Eroded rock without form could be the sand produced.
Rocks that are changed by heat and pressure will form?
Metamorphic Rock
What type of rock are mostly found in mountains?
volcanic mountains are mostly associated with igneous rocks and sedimentary rocks at their slopes can be found due to weathering,but mountains such as fold mountains can contain igneous rocks,metarmophic ro cks and even sedimentary rocks at their slopes
Are weathered rocks only components needed to form soil?
Yes, weathering slowly does break down rocks and makes them pebbles and then soil, but it takes years.
What are four felsic igneous rocks?
vesicular rhyolite, rhyolite, granite, and pegmatite!
How are the ways in witch pluton and pegmatite minerals form similar?
dick
How does Beryl form?
Beryl is exclusively of a pegmatite mineral. When this pegmatite magma has a rich source of beryllium, the beryl crystals are formed. They are formed in high temperature veins by these beryllium bearing gas content.
Is pegmatite felsic or mafic?
It is felsic because it is lightly colored. Most rocks that are light are also felsic. The exception is obsidian which is dark and felsic.
What is pegmatite texture?
A pegmatite texture in a rock is a course-grained Igneous Rock. Granite Pegmatite is a common Igneous rock
What is a fun fact about the Pegmatite rock?
The pegmatite rock is ahn Igneous rock.
What kind of rock is pegmatite is it sedimentary igneous or metamorphic?
pegmatite rock is a igneous rock
Where can you find a pegmatite rock?
There is no such thing as a "pegmatite rock" in the Pokemon D/P games.
What are the five rocks?
There are far beyond 5 igneous rocks. Among them, there is: Pumice Obsidian Andesite Basalt Diorite Gabbro Granite Pegmatite Peridotite Rhyolite Scoria Tuff Porphyry Anorthosite Vesicular Dunite
What are examples of intrusive rocks?
acording to the NY state reference table for earth science; granite, pegmatite, diorite, gabbro, peridotite, and dunite
What are the five igneous rocks?
There are far beyond 5 igneous rocks. Among them, there is: Pumice Obsidian Andesite Basalt Diorite Gabbro Granite Pegmatite Peridotite Rhyolite Scoria Tuff Porphyry Anorthosite Vesicular Dunite
What Pegmatite used for?
Pegmatite is used for feldspar, sheet mica, beryllium, tantalum niobium, and lithium minerals.
