Category: Geological Properties Of Crystals
Geological Properties Of Labradorite
Geological Properties Of Labradorite Geological Properties Of Labradorite, Geologic Occurrence of Labradorite Labradorite is found in igneous, metamorphic, and sedimentary rocks. It most often occurs as a primary mineral in mafic igneous rocks such as basalt, gabbro, and norite. It is also found in anorthosite, an igneous rock in which labradorite can be the most abundant mineral. Labradorite occurs in gneiss that has been …
Geological Properties Of Andesine
Geological Properties Of Andesine Geological Properties Of Andesine – What Is Andesine Andesine is a silicate mineral, a member of the plagioclase feldspar solid solution series. Its chemical formula is (Ca, Na)(Al, Si)4O8, where Ca/(Ca + Na) (% Anorthite) is between 30%-50%. The plagioclase feldspars are a continuous solid solution series and as such the accurate identification …
Geological Properties Of Obsidian
Geological Properties Of Obsidian Geological Properties Of Obsidian, Obsidian is an extrusive igneous rock. It is occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. Result of this formed, glass occupies more than 80 % and that have seeming conchoidal fracture and vitreous luster. It usually colors dark, black, …
Geological Properties Of The Three Types Of Rocks
Geological Properties Of The Three Types Of Rocks The three types of rocks Igneous — they form from the cooling of magma deep inside the earth. They often have large crystals (you can see them with the naked eye). Metamorphic — they are formed through the change (metamorphosis) of igneous and sedimentary rocks. They can …
Geological Properties Of Quartz
Geological Properties Of Quartz Geological Properties Of Quartz, Quartz has been known and appreciated since pre-historic times. The most ancient name known is recorded by Theophrastus in about 300-325 BCE, κρύσταλλος or kristallos. The varietal names, rock crystal and berg crystal, preserve the ancient usage. The root words κρύοσ signifying ice cold and στέλλειυ to …
Geological Properties Of Kammererite
Geological Properties Of Kammererite History Geological Properties Of Kammererite, was discovered in 1851, named in honor of Russian geologist August Alexander Kammerer, and is found in several locations around the world, including India, where this material originates. It’s often found in a micaceous state, meaning it grows in flat, thing, fragile sheets, and is very …
Geological Properties Of Tourmaline
Geological Properties Of Tourmaline Geological Properties Of Tourmaline, Tourmaline most commonly occurs as an accessory mineral in igneous and metamorphic rocks. Large, well-formed crystals of tourmaline can form in cavities and fractures during hydrothermal activity. Tourmaline is a hard and tenacious mineral. That enables it to persist during stream and beach transport as durable grains in sediments and …
Geological Properties Of Lithium Quartz
Geological Properties Of Lithium Quartz Geology/History Geological Properties Of Lithium Quartz, This type of Quartz has Lithium inclusions, the Lithium show within the Quartz as beautiful purple to pinkish or earthy brown wisps of color often occurring in phantom formations. Lithium is one of the three elements created during the Big Bang. It is the …
Geological Properties Of Amethyst
Geological Properties Of Amethyst Geological Properties Of Amethyst, Amethyst is a violet variety of quartz often used in jewellery. The name comes from the ancient Greek ἀ a- (“not”) and μέθυστοςméthystos (“intoxicated”), a reference to the belief that the stone protected its owner from drunkenness. The ancient Greeks wore amethyst and made drinking vessels decorated …