How to MINE OPAL gems in the OUTBACK
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The Moon Once Had Fountains Of FIRE From Lava Eruptions
US scientists have found traces of carbon in volcanic glass collected from the Apollo missions, and say this volatile gas may have caused fountains of fire on the moon. The moon's surface was hot and ...
Martian Glass: Window Into Possible Past Life?
Researchers from Brown University have used satellite data to detect deposits of glass within impact craters on Mars. Though formed in the searing heat of a violent impact, the glasses just might prov...
Opals are Some of the Most Beautiful and Diverse Gemstones
It's like a magical world inside each one.
Spectacular Crystal Opal Looks Like a Handheld Aquarium
Crystals and gems are revered and collected for their physical beauty and monetary value and this Opal Butte crystal with contra luz color is no exception...
Volcanic glass
Volcanic glass is the amorphous (uncrystallized) product of rapidly cooling magma. Like all types of glass, it is a state of matter intermediate between the close-packed, highly ordered array of a cr...
Pitchstone
Pitchstone is a dull black glassy volcanic rock formed when viscous lava or magma cools quickly. It is similar to but coarser than obsidian. It is a volcanic glass, however, unlike a glass pitchstone...
Limu o Pele
Limu o Pele or Pele's seaweed (Hawaiian, literally, "seaweed of Pele", after Pele the Hawaiian fire goddess of volcanoes) is a geological term for thin sheets and subsequently shattered flakes of brow...
Limu o Pele - Wikipedia
Martian Glass: Window Into Possible Past Life?
Researchers from Brown University have used satellite data to detect deposits of glass within impact craters on Mars. Though formed in the searing heat of a violent impact, the glasses just might prov...
Tektite
Tektites (from Greek τηκτός "tēktos", molten) are gravel-size bodies composed of black, green, brown or gray natural glass formed from terrestrial debris ejected during extraterrestrial impacts. They ...
Tektite - Wikipedia
Perlite
Perlite is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian. It occurs naturally and has the unusual property of greatly expanding w...
Perlite - Wikipedia
Lechatelierite
Lechatelierite is silica glass, amorphous SiO2. One common way in which lechatelierite forms naturally is by very high temperature melting of quartz sand during a lightning strike. The result is an ir...
Lechatelierite - Wikipedia
Palagonite
Palagonite is an alteration product from the interaction of water with volcanic glass of chemical composition similar to basalt. Palagonite can also result from the interaction between water and basal...
Palagonite - Wikipedia
Apache tears
Apache tears are rounded nodules of obsidian (volcanic black glass) with diameter from about 0.5 to 5 cm. An Apache tear looks opaque by reflected light, but translucent when held up to light. ...
Apache tears - Wikipedia
Sideromelane
Sideromelane is a vitreous basaltic volcanic glass, usually occurring in palagonite tuff, for which it is characteristic. It is a less common form of tachylite, with which it usually occurs together; ...
Hyaloclastite
Hyaloclastite is a hydrated tuff-like breccia rich in black volcanic glass, formed during volcanic eruptions under water, under ice or where subaerial flows reach the sea or other bodies of water. It ...
Hyaloclastite - Wikipedia
Coesite
Coesite is a form (polymorph) of silicon dioxide SiO2 that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (700 °C or 1,300 °F), are applied to quartz. C...
Coesite - Wikipedia
Diamond
In mineralogy, diamond (/daɪ(ə)mənd/; from the ancient Greek ἀδάμας – adámas "unbreakable") is a metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered...
Obsidian
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Obsidian is com...
Obsidian - Wikipedia
Trinitite
Trinitite, also known as atomsite or Alamogordo glass, is the glassy residue left on the desert floor after the plutonium-based Trinity nuclear bomb test on July 16, 1945, near Alamogordo, New Mexico....
Trinitite - Wikipedia
Glass with embedded metal and sulfides
Glass with embedded metal and sulfides (GEMS) are tiny spheroids in cosmic dust particles with bulk compositions that are approximately chondritic. They form the building blocks of anhydrous interplan...
Darwin glass
Darwin glass is a natural glass found south of Queenstown in West Coast, Tasmania. It takes its name from Mount Darwin in the West Coast Range, where it was first reported, and later gave its name to ...
Darwin glass - Wikipedia
Chivay obsidian source
The Chivay obsidian source (71.5355° S, 15.6423° W, 4972 masl) is the geological origin of a chemical group of obsidian that is found throughout the south-central Andean highlands including southern P...
Libyan desert glass
Libyan desert glass (LDG), or great sand sea glass is a substance found in areas in the Libyan Desert. Fragments of desert glass can be found over large areas, up to tens of kilometers.
The origi...
Libyan desert glass - Wikipedia
Pumice
Pumice /ˈpʌmɨs/, called pumicite in its powdered or dust form, is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. It is typicall...
Pumice - Wikipedia
Georgiaite
Georgiaite is a form or type of tektite. They are found in part of the 34-million-year-old North American strewnfield coming from the Chesapeake Bay impact crater. Two strewnfields and tektite groups ...
Shock metamorphism
Shock metamorphism or impact metamorphism describes the effects of shock-wave related deformation and heating during impact events. The formation of similar features during explosive volcanism is gene...
Shock metamorphism - Wikipedia
Pele's hair
Pele's hair /ˈpeɪleɪz ˈhɛər/ is volcanic glass threads or fibers formed when small particles of molten material are thrown into the air and spun out by the wind into long hair-like strands. The diamet...
Pele's hair - Wikipedia