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{{Infobox mineral | name = Cordierite | category = | boxwidth = | boxbgcolor = | image = Cordierite.jpg | caption = Left: rough specimen showing dichroism; right: cut stone | formula = (Mg,Fe)2Al4Si5O18 | color = Blue, violet, yellow-brown; transparent to translucent | habit = Pseudo-hexagonal prismatic twins, as imbedded grains, and massive | system = Orthorhombic; 2/m 2/m 2/m | twinning = | cleavage = {010} poor | fracture = Conchoidal, uneven | mohs = 7 - 7.5 | luster = Greasy or vitreous | refractive = α=1.522 - 1.558 β=1.524 - 1.574 γ=1.527 - 1.578 Indices increase with Fe content. | opticalprop = Usually optically (-), sometimes (+); 2V = 0-90° | pleochroism = Strong, dichroic: brown-yellow, light and dark blue | streak = White | gravity = 2.57 - 2.66 | melt = | fusibility = on thin edges | diagnostic = Resembles quartz can be distinguished by pleochroism. Can be distinguished from corundum by its lower hardness | solubility = | other = Dana class: 61.2.1.1 }}

Cordierite%20structure.png

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Wikipedia About Iolite

{{Infobox mineral | name = Cordierite | category = | boxwidth = | boxbgcolor = | image = Cordierite.jpg | caption = Left: rough specimen showing dichroism; right: cut stone | formula = (Mg,Fe)2Al4Si5O18 | color = Blue, violet, yellow-brown; transparent to translucent | habit = Pseudo-hexagonal prismatic twins, as imbedded grains, and massive | system = Orthorhombic; 2/m 2/m 2/m | twinning = | cleavage = {010} poor | fracture = Conchoidal, uneven | mohs = 7 - 7.5 | luster = Greasy or vitreous | refractive = α=1.522 - 1.558 β=1.524 - 1.574 γ=1.527 - 1.578 Indices increase with Fe content. | opticalprop = Usually optically (-), sometimes (+); 2V = 0-90° | pleochroism = Strong, dichroic: brown-yellow, light and dark blue | streak = White | gravity = 2.57 - 2.66 | melt = | fusibility = on thin edges | diagnostic = Resembles quartz can be distinguished by pleochroism. Can be distinguished from corundum by its lower hardness | solubility = | other = Dana class: 61.2.1.1 }}

Cordierite%20structure.png

Cordierite (mineralogy) or iolite (gemology) is a magnesium iron aluminium cyclosilicate. Iron is almost always present and a solid solution exists between Mg-rich cordierite and Fe-rich sekaninaite with a series formula: (Mg,Fe)2Al3(Si5AlO18) to (Fe,Mg)2Al3(Si5AlO18). A high temperature polymorph exists, indialite, which is isostructural with beryl and has a random distribution of Al in the (Si,Al)6O18 rings.

Cordierite is named after the French geologist Pierre Louis Antoine Cordier (1777 - 1861).

Occurrence

Cordierite typically occurs in contact or regional metamorphism of argillaceous rocks. It is especially common in hornfels produced by contact metamorphism of pelitic rocks. Two common metamorphic mineral assemblages include sillimanite-cordierite-spinel and cordierite-spinel-plagioclase-orthopyroxene. Other associated minerals include garnet (cordierite-garnet-sillimanite gneisses) and anthophyllite. Cordierite also occurs in some granites, pegmatites, and norites in gabbroic magmas. Alteration products include mica, chlorite, and talc. Cordierite occurs in the granite contact zone at Geevor Tin Mine in Cornwall.

Cordieryt%2C%20Madagaskar.jpg

Commercial use

Catalytic converters are commonly made from ceramics containing a large proportion of cordierite. The manufacturing process deliberately aligns the cordierite crystals to make use of the very low thermal expansion seen for one axis. This prevents thermal shock cracking from taking place when the catalytic converter is used.

Search results for Iolite

Best Cut Gems, your source for Loose Faceted Iolite Gemstones.

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Iolite

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Iolite Jewelry at The Artful Soul

Iolite jewelry, a violet gemstone set in silver or gold by various artists represented at The Artful Soul ... For more IOLITE jewelry, you may also try a ...www.artfulsoul.com/store/pageiolite.html

Iolite Gold Ring - NexTag.com

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Iolite Jewelry Pendants, Iolite Earrings, and Bead Necklaces

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Images found for Iolite

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News about Iolite

HTC 2009 Lineup Leaked, a Possible T-Mobile G2 Spotted

SoftpediaIt seems that HTC ’s 2009 product lineup was leaked on the Web a few hours ago. The pictures of no less than 25 new handsets can be found on the PPCGeeks forum, including the newly-seen Iolite , with a possible Iolite II in the form of a device ... http://news.softpedia.com/news/HTC-2009-Lineup-Leaked-a-Poss...

Unannounced HTC Iolite smartphone appears on Expansys

MobileBurnPlease note that this story is based upon rumor and/or speculation. Online retailer Expansys has posted information on an unannounced HTC smartphone dubbed the Iolite. According to the details published by Expansys, the Iolite features a 2.8" QWVGA ... http://www.mobileburn.com/rumors.jsp?Id=5989

HTC Touch Cruise (a.k.a Iolite) Announced, Chock-Full of GPSy Goodness

Intomobile.comLast week we got a closer look at the HTC Iolite, highlighting a particularly mysterious footprint key at the bottom. Well, today the Touch Cruise has been announced, and we learn that the key is reserved for a little service called Footprints ... http://www.intomobile.com/2009/01/22/htc-touch-cruise-aka-io...

More HTC Iolite Specs and Photos Surface

SoftpediaThe HTC Iolite has come to the front once again, following the unexpected leak of the company's plans for this year. While some images with the phone have already surfaced during the past few weeks, yet not the best ones, this time we get both some ... http://news.softpedia.com/news/More-HTC-Iolite-Specs-and-Pho...

HTC Iolite leaked by Expansys

Intomobile.comWe haven’t caught anything official from HTC about their upcoming Iolite model, so we’re guessing Expansys made a mistake to make the Windows Mobile smartphone available for pre-order. That, however, doesn’t mean the Iolite is too impressive ... http://www.intomobile.com/2009/01/07/htc-iolite-leaked-by-ex...

Search results for Iolite

iolite Vaporizer on Sale @ GOTVAPE.com

iolite Portable Vaporizer on Sale Now @ Got Vape, iolite Vaporizer Information and Reviews, Guaranteed Lowest Price Available.http://www.gotvape.com/store/iolite-vaporizer.php

Iolite gemstone meaning

Gemstone: Iolite gem stone meaning ... Iolite Gemstone meaning. Iolite is a fascinating stone with an interesting past.http://www.crystal-cure.com/iolite.html

Iolite Rings. Buy a Iolite Ring or Iolite Jewelry Today at ...

Iolite rings and iolite jewelry at a discount at MyJewelrySource. Unique iolite rings and jewelry. Buy a iolite ring or iolite rings. Free Shipping. 30 day Return on a iolite ring ... http://www.myjewelrysource.com/iolite-rings.htm

Iolite definition | Dictionary.com

Copy & paste this link to your blog or website to reference this pagehttp://dictionary.reference.com/browse/Iolite

IOLITE JEWELRY - Unique Iolite Jewelry at NOVICA

Find the perfect iolite jewelry: Novica, in association with National Geographic, invites you to explore iolite jewelry at incredible prices, showcasing the art of unique ... http://jewelry.novica.com/iolite/

Wikipedia results for Iolite

Cordierite - Wikipedia, the free encyclopedia

Cordierite or iolite is a magnesium iron aluminium cyclosilicate. Iron is almost always present and a solid solution exists between Mg-rich cordierite and Fe-rich sekaninaite with ... http://en.wikipedia.org/wiki/Iolite

Prasiolite - Wikipedia, the free encyclopedia

Prasiolite, green-quartz or vermarine is a green form of quartz. Since 1950, almost all natural prasiolite has come from a small Brazilian mine, but it is seen in Lower Silesia in ... http://en.wikipedia.org/wiki/Prasiolite

Ophiolite - Wikipedia, the free encyclopedia

An Ophiolite is a section of the Earth's oceanic crust and the underlying upper mantle that has been uplifted or emplaced to be exposed within continental crustal rocks.http://en.wikipedia.org/wiki/Ophiolite

HTC Touch Cruise - Wikipedia, the free encyclopedia

Redirected from HTC Iolite) ... The HTC Touch Cruise, also known as the HTC P3650 or its codename the HTC Polaris 100 [1] ... http://en.wikipedia.org/wiki/HTC_Iolite

Sepiolite - Wikipedia, the free encyclopedia

Sepiolite is a clay mineral, a complex magnesium silicate, a typical formula for which is Mg 4 Si 6 O 15 (OH) 2 • 6H 2 O. It can be present in fibrous, fine-particulate, and ... http://en.wikipedia.org/wiki/Sepiolite
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I-Olite Vaporizer

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HTC Touch Cruise 2009 edition - HTC...

HTC Touch Cruise 2009 edition - HTC Touch Cruise 09 iolite - pocketdeviceVideorecensione HTC Touch Cruise 09 - Iolite - l'ultimo smartphone HTC Windows Mobile 6.1 con GPS integrato, interfaccia TouchFLO e HTC FootprintsFlash - Video

I-Olite Vaporizer

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Answers for Iolite

GoddyssWhat trademark names is iolite known by?GoddyssIolite may be called as Cordierite . Another ancient Greek name associated with the gem is ‘dichroite’ or two-colored rock. Iolite was also known as ‘water sapphire’ in the ancient days ...yellabanana77Do you think iolite will replace Tanzies?yellabanana77I suppose it's possible, but I wouldn't bank on it. Fashion is fickle. Tanzanite is popular right now, but may fall out of favor before the mines play out. That's what I'm hoping anyways, love that...Alex SWhat does Iolite look like? Can i have that on my engagement ring?Alex SIolite is a beautiful purple stone. Yes, you can have that as an engagement ring. You don't have to have a diamond. Mine was an aquamarine. My sister's was a sapphire. No law says you need a diamond.BaileyWhich are darker Iolite gems or tanzanite gems?BaileyBoth gems vary quite a bit in the shades of their colors. You can get a sense of the range of color of tanzanite by looking at the pictures on this website:Kier22_2If I took my Iolite & diamond ring in white gold?Kier22_21/3 of the resale value
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