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Origin of alkali-feldspar granites: An example from the

Feldspar – Identification of specific feldspars: Alkali feldspars can often be distinguished from plagioclase feldspars because most grains of the latter exhibit albite twinning (see above Crystal structure), which is manifested by parallel lines on certain cleavage surfaces, whereas grains of alkali feldspars do not.

Tektite | geology | Britannica.com

Tektite | geology | Britannica.com

Tektite: Tektite, any of a class of small, natural glassy objects that are found only in certain areas of the Earth’s surface. The term is derived from the Greek word tēktos, meaning “melted,” or “molten.”

Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.Igneous rock is formed through the cooling and solidification of magma or lava.

List of all Igneous, Sedimentary, and Metamorphic Rock Types with Pictures and Links to Specific Articles about each Type of Rock.

Moon rock or lunar rock is rock that is found on the Earth’s moon, or lunar material collected during the course of human exploration of the Moon

As described in the section on "fake jades", many minerals (especially green ones!) are sometimes described and sold as jade but are not, in fact jade.This page goes into more detail about the minerals and substances that are not jade, and offers suggestions for how to differentiate it from true jade.

Geology of South Carolina Online Map . Looking for Gold Information? Looking for Geologic Data for your GIS? GENERAL INFORMATION. The Geological Survey develops, publishes, and distributes information on South Carolina’s geology.

Feldspar – Identification of specific feldspars: Alkali feldspars can often be distinguished from plagioclase feldspars because most grains of the latter exhibit albite twinning (see above Crystal structure), which is manifested by parallel lines on certain cleavage surfaces, whereas grains of alkali feldspars do not.

Tektite: Tektite, any of a class of small, natural glassy objects that are found only in certain areas of the Earth’s surface. The term is derived from the Greek word tēktos, meaning “melted,” or “molten.”

Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.Igneous rock is formed through the cooling and solidification of magma or lava.

List of all Igneous, Sedimentary, and Metamorphic Rock Types with Pictures and Links to Specific Articles about each Type of Rock.

Moon rock – Wikipedia

Moon rock – Wikipedia

Moon rock or lunar rock is rock that is found on the Earth’s moon, or lunar material collected during the course of human exploration of the Moon

As described in the section on "fake jades", many minerals (especially green ones!) are sometimes described and sold as jade but are not, in fact jade.This page goes into more detail about the minerals and substances that are not jade, and offers suggestions for how to differentiate it from true jade.

Geology of South Carolina Online Map . Looking for Gold Information? Looking for Geologic Data for your GIS? GENERAL INFORMATION. The Geological Survey develops, publishes, and distributes information on South Carolina’s geology.

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