Our navigation bar is loading . . . . . .



Advertise on JCSM - Hear JCSM's Weekly Devotions via Podcast/RSS Feed! - Skip These Ads

You can advertise your site right here!Click here to learn more!

10,000 Wise Quotes and Spiritual Sayings by Jason Gastrich, Ph.D.

 JCSM's Top 1000 Christian Sites - Free Traffic Sharing Service! Join the Online Christ-Centered Ministries!

-

Jesus Christ Saves Ministries

Click here and add this page to your favorites!

Return to the JCSM Study Center!

Encyclopedia Britannica



COPPERAS (Fr. couperose; Lat. cupri rosa. the flower of copper)

This article appears in Volume V07, Page 110 of the Encyclopedia Britannica.

Encyclopedia Britannica - Main :: COM-COR
COPPERAS (Fr. couperose; Lat. cupri rosa. the flower of copper) , green vitriol, or ferrous sulphate, FeSO4.7H2O, having a bluish-green colour and an astringent, inky and somewhat sweetish taste. It is used in dyeing and tanning, and in the manufacture of ink and of Nordhausen sulphuric acid or fuming oil of vitriol (see IRON).
COPPER-GLANCE, a
mineral
  consisting of cuprous sulphide, Cu2S, and crystallizing in the orthorhombic system. It is known also as chalcocite, redruthite and vitreous copper (German, Kupferglaserz of G. Agricola, 1546). The crystals have the form of six-sided tables or prisms; the
angle between the prism faces (lettered o in the figure) being 6o 25'. When twinned on the prism planes o, as is frequently the case, the crystals simulate hexagonal symmetry still more closely, as in the minerals arag-
onite and chrysoberyl. Twinning also takes place according to two other laws, giving rise to interpenetrating crystals with the basal planes (s) of the two individuals inclined at angles of 69 or 87 56' respectively. The
mineral
  also occurs as compact masses of considerable extent. The colour is dark lead-grey with a metallic lustre, but this is never very
bright
 , since the material is readily altered, becoming black and dull on exposure to light. The mineral is soft (H.=22) and sectile, and can be readily cut with a knife, like
argentite
 ; sp. gr. 5.7. Analyses agree closely with the
formula
  Cu2S, which corresponds to 79.8% of copper; small quantities of iron and silver are some-times present.
Next to chalcopyrite, copper-glance is the most important ore of copper. It usually occurs in the upper part of the copper-bearing lodes, and is a secondary sulphide derived from the chalcopyrite met with at greater depths; sometimes, however, the two minerals are found together in the same part of the lodes. The best crystals are from St Just, St Ives, and Redruth in
Cornwall
 , and from Bristol in Connecticut. Small crystals of
recent
  formation are found on Roman bronze coins in the thermal springs at Bourbonne-les-Bains.
Copper-glance readily alters to other minerals, such as malachite, covellite,
melaconite
  and chalcopyrite. On the other hand, it is found as pseudomorphs after chalcopyrite, galena, and organic structures such as
wood
 ; copper-glance pseudomorphous after galena preserves the cleavage of the
original
  mineral and is known as harrisite.
Isomorphous with copper-glance is the orthorhombic mineral stromeyerite, a
double
  copper and silver sulphide, CuAgS, which occurs in abundance in the Altai Mountains. (L. J. S.)


End of Article: COPPERAS (Fr. couperose; Lat. cupri rosa. the flower of copper)


If you wish, you can link directly to this article.
<a href="http://jcsm.org/StudyCenter/Encyclopedia/COM_COR/COPPERAS_Fr_couperose_Lat_cupr.html">
COPPERAS (Fr. couperose; Lat. cupri rosa. the f...
</a>


(Previous)
COPPER (symbol Cu, atomic weight 63.1, H=1, or ...
(Next)
COPPERHEADS



 

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, discussion boards, weekly html and mp3 devotionals, free email accounts, and much more.

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 © 1997-2008.

_____________________________________________________________________________

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