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Titanite crystal model. Titanite, or sphene (from Ancient Greek σφηνώ (sphēnṓ) 'wedge'), [5] is a calcium titanium nesosilicate mineral, Ca Ti Si O 5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium; calcium may be partly replaced by thorium. [6]
Deep Space 1 (DS1) was a NASA technology demonstration spacecraft which flew by an asteroid and a comet. It was part of the New Millennium Program , dedicated to testing advanced technologies. Launched on 24 October 1998, the Deep Space 1 spacecraft carried out a flyby of asteroid 9969 Braille , which was its primary science target.
DS1 or DS-1 may refer to: BOSS DS-1, a guitar distortion pedal; Digital Signal 1, a T-carrier signaling scheme devised by Bell Labs; Deep Space 1, a mission to 9969 Braille & 19P/Borrelly; DS-1 (drug), a selective GABA A α4β3δ agonist drug; South African Class DS1, a diesel locomotive class; Datsun DS-1, a car by Nissan, see Datsun DS Series
Beginning c. 1955, large quantities of strontium titanate were manufactured for this sole purpose. Strontium titanate was in competition with synthetic rutile ("titania") at the time, and had the advantage of lacking the unfortunate yellow tinge and strong birefringence inherent to the latter material.
Japanese emergency services struggled for hours on Tuesday to rescue the driver of a truck that plunged into a massive sinkhole near Tokyo.. Authorities in Yashio City, Saitama, received calls ...
The accessory minerals are magnetite, ilmenite, apatite, and titanite. Eventually, sodalite is found along hydrothermal fractures. Different from granite, zircon is rare and, if present, it is as xenocrysts. On the other hand, nepheline syenite gneiss contains abundant and large zircon crystals.
A roller in a typical power farming application. The roller is an agricultural tool used for flattening land or breaking up large clumps of soil, especially after ploughing or disc harrowing. Typically, rollers are pulled by tractors or, prior to mechanisation, a team of animals such as horses or oxen.
If you’re not fond of snakes, Texas probably isn’t your ideal place to live. The state is home to 10 species of rattlesnake, and every single county has at least one species living in it ...