Our navigation bar is loading . . .

Subscribe to JCSM's weekly inspirational message podcast!Write on Jason Gastrich's Facebook page!Add JCSM as a friend to your MySpace account!Watch Jason Gastrich's videos on YouTube!
Read, respond and subscribe to Jason Gastrich's blog!

Designate a portion of your next eBay auction to JCSM through eBay's Mission Fish program!JCSM's Top 1000 Christian Sites - Free Traffic Sharing Service!

Jesus Christ Saves Ministries

Helping San Diego, California and beyond since 1997

Please type your email and let us encourage you!

 
       
Search jcsm.org now!

Click here and add this page to your favorites!

Return to the JCSM Study Center!

Encyclopedia Britannica



VESUVIANITE

This article appears in Volume V27, Page 1063 of the Encyclopedia Britannica.

Encyclopedia Britannica - Main :: VAN-VIR
VESUVIANITE , a
rock
 -forming
mineral
  of complex com-
position. It is a basic calcium and aluminium silicate con-
aining small amounts of iron, magnesium, water,
fluorine, etc., and sometimes
boron
 ; the ap-
proximate
formula
  is H2Ca6(Al,Fe)aSi5O18. It
crystallizes in the tetragonal system, but often
exhibits optical anomalies, and the optical sign
varies from positive to negative. Well-devel-
oped crystals are of frequent occurrence. They
usually have the form of four- or eight-sided
prisms terminated by the basal planes (c) and
pyramid-planes (p in fig.); the prism-planes are vertically
striated and the basal planes smooth and
bright
 . Crystals are
transparent to translucent, vitreous in lustre and vary in colour from brown to green; a sky-blue variety, called cyprine, owes its colour to the presence of a trace of copper. The specific gravity is 3.4 and the hardness 62. The name vesuvianite was given by A. G. Werner in 1795, because fine crystals of the
mineral
  are found at
Vesuvius
 ; these are brown in colour and occur in the ejected limestone blocks of Monte Somma. Several other names have been applied to this species, one of which, idocrase of R. J. Hauy (1796), is now in common use.
Vesuvianite is typically a mineral of contact-metamorphic origin, occurring most frequently in crystalline limestones at their contact with igneous
rock
 -masses; it also occurs in serpentine, chlorite-schist and gneiss, and is usually associated with garnet,
diopside
 , wollastonite, &c. Localities which have yielded fine crystallized specimens are the Ala valley near Turin, Piedmont, Monte Somma (
Vesuvius
 ), Monzoni in the Fassa valley, Tirol, Achmatovsk near Zlatonst in the Urals, the River Wilui
district
  near Lake Baikal in Siberia (" wiluite "), Christiansand in Norway, &c. When found in transparent crystals of a good green or brown colour it is occasionally cut as a gem-stone. A compact variety, closely resembling jade in
appearance
 , has been used as an ornamental stone. (L. J. S.) ,


End of Article: VESUVIANITE


If you wish, you can link directly to this article.
<a href="http://jcsm.org/StudyCenter/Encyclopedia/VAN_VIR/VESUVIANITE.html">
VESUVIANITE
</a>


(Previous)
VESTRY (O.- Fr. vestiaire, Lat. vestiarium, a w...
(Next)
VESUVIUS (also Vesevus in ancient poets)



 

Jesus Christ Saves Ministries

The JCSM Study CenterAmerica's Christian FoundationSkeptic's Annotated Bible: Corrected and ExplainedNKJV Web Hosting and Services
JCSM's Sermons, Debates and the Bible on MP3The Online Christ-Centered MinistriesDo You Have A Web Site?  Your Ad Could Be Here!Seminary Notes and PapersThe Picturesque Photo Albums


Jesus Christ Saves Ministries, P.O. Box 70696, Pasadena, CA 91117

JCSM is a 501(c)(3), non-profit organization. Copyright © 1997-present.



Kingdom Debt Solutions - Be Debt Free! Sport Logos - Quality Athletic Equipment The JCSM Study Center Your Ad Could Be Here! Launch A Successful Internet Organization or Business! Learn Guitar, Bass, or Piano in San Diego county!

You can advertise your site right here!

Free & Cheap Cell Phones  |  Cheap Long Distance Phone Service Carriers  |  Talk America Local Phone Service  |  Ztel & MCI - Unlimited Long Distance
Compare Cell Phone Plans & Companies  | 
International Calling Cards & Prepaid Phone Cards  |  Voice Over IP Broadband Internet Phone Service  |  Wireless Phone Plans & Cheap Cell Phones

Dr. Jason Gastrich

Jason Gastrich, Ph.D.

 

Jesus Christ Saves Ministries is directed by Dr. Jason Gastrich. It was founded in 1997 and it exists to bring people into a life-changing and productive relationship with Jesus Christ. JCSM offers over 200,000 free web pages, including its weekly inspirational emails that have been sent continuously for over a decade.

Jesus Christ Saves Ministries
P.O. Box 9297
San Diego, CA  92169
1-877-850-3878 or Email

JCSM is a 501(c)(3), non-profit organization. Copyright © 1997-2009.

_____________________________________________________________________________

Online First Aid and CPR Certification  .  The Online Christ Centered Ministries  .  The Skeptic's Annotated Bible: Corrected and Explained  .  The Inerrancy Discussion Board  .  Free Email Accounts  .  Home Equity Loans  .  JasonGastrich.com  .  The Missions, Apologetics, and Creation Bible Conference  .  Young Earth Creation Science  .  San Diego Music Lessons  .  10,000 Wise Quotes and Spiritual Sayings  .  Gastrich.net  .  Maximizing the Internet: 12 Keys to Success  .  Louisiana Baptist University  .  NKJV Web Hosting and Services  .  Michael Newdow  .  San Diego Soccer Training  . Christian Guitar Lessons  .  Jesus Christ Saves Ministries  .  Eternal Security