Which is the most common name for titanite?
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- The International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN) adopted the name titanite and "discredited" the name sphene as of 1982, although commonly papers and books initially identify the mineral using both names. Sphene was the most commonly used name until the IMA decision, although both were well known.
- The name Sphene is still frequently used, especially in Europe. Sphene also persists as the more prevalent name for faceted Titanite gemstones or transparent crystal forms.
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Titanite is frequently called by the name Sphene, which was the more popular term for this mineral prior to 1982. In 1982, the IMA adopted the official name as Titanite and discredited Sphene. The name Sphene is still frequently used, especially in Europe.
Sphene (titanite) is one of the main ore minerals containing titanium. Samples of gem quality are very rare and can be compared with diamonds in the play of light. The mineral was named for the characteristic shape of the crystals, because from ancient greek “sphenos” means “wedge”. The second common name for this stone is titanite.
Originally described from Buø, Tromøysund, Arendal, Aust-Agder, Norway by Erdmann (1844). Lederite (of Shepard) Lederite is a variety of titanite, generally red brown to dark brown, that also has a distinct parting, originally mistaken as a cleavage.
Composition and paragenesis of Na-, Nb-, and Zr-bearing titanite from Khibina, Russia, and crystal-structure data for synthetic analogues Locality: Khibina, Russia - The Canadian Mineralogist 43 (2005) 795-812. In situ powder diffraction study of titanite (CaTiOSiO4) at high pressure and high temperature - American Mineralogist 85 (2000) 1465-1473.
The most common compound, titanium dioxide, is a popular photocatalyst and is used in the manufacture of white pigments. Other compounds include titanium tetrachloride (TiCl 4), a component of smoke screens and catalysts; and titanium trichloride (TiCl 3), which is used as a catalyst in the production of polypropylene.
Eucolite-Titanite: A cerian titanite, first described by Scheerer (1853) from Barkevik, Langesundsfjord, Vestfold, Norway.
Description. Named after the Titans of Greek mythology, titanium is a hard, lustrous, white metal. It is very corrosion resistant and generally not affected by air, water, acids or bases. Titanium is very common in the Earth’s crust, being the 9th most common element. It is also common in meteorites, the Sun and Moon.
Common Opal is known to regulate the influence of Not Available planet.
We've handpicked 22 related questions for you, similar to «Which is the most common name for titanite?» so you can surely find the answer!
Which is the most common colour of sapphirine?
- Sapphirine from Madagascar. Typical colours range from light to dark sapphire blue, bluish to brownish green, green, and bluish or greenish gray to black; less common colours include yellow, pale red, and pink to purplish pink. Sapphirine is relatively hard (7.5 on Mohs scale), usually transparent to translucent, with a vitreous lustre.
Which is the most common element in actinolite?
- Most Visited Gemstones Chemical Formula Ca2(Mg,Fe)5Si8O22(OH)2 Composition Basic calcium, magnesium, iron silicate Color Light to dark green; grayish green to bl ... Streak Colorless Hardness 5.5 - 6 16 more rows ...
Which is the most common form of prehnite?
- Prehnite forms in both odd and distinct formation habits. It most often occurs as rounded or bubbly crystal masses, and commonly forms odd-shaped epimorphs after Anhydrite, Glauberite, and Laumontite.
Which is the most common form of spodumene?
- Spodumene is a fairly prevalent mineral, but mostly dull and uninteresting in its most common forms. However, its two distinctly colored transparent varieties, Kunzite (pink) and Hiddenite (green) are very aesthetic and valued as gemstones.
Which is the most common habit of malachite?
- For additional information, see the gemstone section on Malachite. Light to dark green, sometimes banded with darker and lighter shades of green, and sometimes sparkling. Most common habit is as large crust s of microscopic crystals. Also occurs as bundles of thin long splinters.
Which is the most common shade of prehnite?
- The most common (both in terms of discovery and discussion) is certainly the green prehnite. The shade of green can differ from pale green to lime green to yellow-green to basically any light shade of green you can imagine. However, you can also get colorless crystals as well as forms of blue, white, orange, and pink.
Which is the most common type of apatite?
- Most of the gemstones referred to as apatite are of the commonest variety, fluorapatite. Other gem-quality apatites include the aforementioned hydroxylapatite as well as carbonate-rich apatite, mimetite, moroxite, vanadinite, wilkeite, and the rare chlorapatite. Lazurapatite, a mixture of lapis lazuli and apatite, occurs in Siberia.
Which is the most common type of sphalerite?
- The Mineral sphalerite. An interesting variety of Sphalerite is known as Schalenblende. Schalenblende is banded variety associated with Wurtzite and often also Pyrite and Galena that forms strange concentric shapes. It is often polished into slab s or cross-sections which are very popular with collectors.
Which is the most common variety of pounamu?
- It is named after the clearness of the sky and is the rarest variety of pounamu. Kawakawa pounamu comes in many shades, often with flecks or inclusions, and is named after the leaves of the native kawakawa tree ( Macropiper excelsum ). It is the most common variety of pounamu. Tangiwai pounamu is clear like glass but in a wide range of shades.
Name 20 common minerals?
- Magnetite 11.Spodumene
Where is titanite most commonly found?
Description: Titanite is a common accessory mineral usually found as tiny grains in many different rocks. It is common in plutonic igneous rocks such as granite, diorite and syenite. Titanite also is a common accessory in metamorphic rocks such as gneiss, schist or marbles. In some marbles, the crystals may be large.
Which is the most common colour for lapis lazuli?
The abundant blue color comes from the sulfur that is fundamental in the lazurite structure. The most common and beautiful lapis lazuli consists of 25 to 40 percent lazurite. When the stone has a lot of white color, it means that it is classified as a cheaper calcite.
Which is the most common replacement phase for nepheline?
- Nepheline is the most common replacement phase, with minor amounts of sodalite, ilmenite, and monticellite (Brearley and Jones, 1998). Glenn B. Stracher, ... Danuta Kusy, in Coal and Peat Fires: A Global Perspective, 2019 Nepheline (Nph) crystal chemistry is, again, somewhat anomalous (Table 13.2.23 ).
Which is the most common shape of a diamond?
- Based on the cubic form and its highly symmetrical arrangement of atoms, diamond crystals can develop into several different shapes, known as 'crystal habits'. The most common crystal habit is the eight-sided octahedron or diamond shape.
Which is the most common type of tourmaline gem?
- Elbaite is the most common gem species, followed by schorl, dravite, and uvite. While rare, other species occasionally show up as gems as well. The properties of some species are so close that it is often difficult to make a distinction. For gemological purposes, it is sufficient to distinguish them all as tourmaline.
What is obsidians common name?
Obsidian, volcanic glass, apache tears.
What is topaz's common name?
Topaz is the common name for Topaz.
Which is the most common member of the xenotime group?
- The term is generally used to describe the most common member of the group, Xenotime- (Y), which is the yttrium phosphate end member of this series . Other, rarer members of the Xenotime series include Xenotime- (Yb), Cherovite, and Wakefieldite.
Is the name sphene still used for titanite?
- The name sphene continues to be publishable in peer-reviewed scientific literature, e.g. a paper by Hayden et al. was published in early 2008 in the journal Contributions to Mineralogy and Petrology. Sphene persists as the informal name for titanite gemstones .
When did the mineral titanite get its name?
- The Mineral titanite. Titanite is frequently called by the name Sphene, which was the more popular term for this mineral prior to 1982. In 1982, the IMA adopted the official name as Titanite and discredited Sphene.
Where did the name lederite titanite come from?
- Originally described from Buø, Tromøysund, Arendal, Aust-Agder, Norway by Erdmann (1844). Lederite is a variety of titanite, generally red brown to dark brown, that also has a distinct parting, originally mistaken as a cleavage. Because this "cleavage" was not present in ordinary titanite, it was described as a separate species. This mineral i...
Where is diamond most common?
It takes pride that it is one of the countries in the world where the most diamonds are found. 9 Ghana Standing at 9th place in diamond production is the country of Ghana, located in Africa. The economy of this country is buoyed by its rich and diverse industrial minerals, petroleum, and natural gas.