PARALLELEPIPED CRYSTALS

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=27 BGCOLOR="#006699" TEXT="#080000"> <div> <FONT SIZE="2" COLOR="#FFFFFF" FACE="Arial" ><B>CHEMISTRY SCHOOL</B></FONT><FONT SIZE="1" COLOR="#FFFFCC" FACE="Arial" ><B>   </B></FONT><B>  </B><A HREF="index.htm" TARGET="_top" TITLE="CHEMISTRY SCHOOL"><U>HOME PAGE - INDEX TO THE LESSONS</U></A>              PARALLELEPIPED SHAPED •  MOLECULAR CRYSTALS </div> <div> </div> </td> </tr><tr> <td valign="top" width=248 BGCOLOR="#66CCCC" TEXT="#080000"> <div>  <FONT SIZE="1" COLOR="#0000BF" FACE="Arial" >    THE MOLECULAR CRYSTALS</FONT></div> <div>                 <A HREF="crystals.htm" TARGET="_top" TITLE="WHAT ARE CRYSTALS?"><U>INTRODUCTION</U></A></div> <div> <I>> RECTANGULAR FACED CRYSTALS</I></div> <div> 1. <A HREF="cubic_crystals.htm" TARGET="_top" TITLE="CUBIC CRYSTALS"><U>CUBIC CRYSTALS</U></A></div> <div> 2. <A HREF="tetragonal_crystals.htm" TARGET="_top" TITLE="TETRAGONAL CRYSTALS"><U>TETRAGONAL CRYSTALS</U></A></div> <div> 3  <A HREF="orthorhomic_crystal.htm" TARGET="_top" TITLE="SIMPLE ORTHORHOMBIC CRYSTALS"><U>SIMPLE ORTHO-RHOMBIC</U></A> </div> <div> 4. <A HREF="top_centered_orthorhomic_crystals.htm" TARGET="_top" TITLE="TOP CENTERED ORTHORHOMBIC"><U>TOP CENTERED ORTHORHOMBIC</U></A></div> <div> 5. <A HREF="face_centered_crystals.htm" TARGET="_top" TITLE="FACE CENTERED ORTHORHOMBIC"><U>FACE CENTERED ORTHORHOMBIC</U></A> </div> <div> 6. <A HREF="equi_centric_orthorombic.htm" TARGET="_top" TITLE="EQUICENTRIC ORTHORHOMBIC"><U>EQUI-CENTRIC ORTHORHOMBIC</U></A></div> <div> <I>> TRIANGULAR, RHOMBOHEDRAL</I></div> <div> <I>   & HEXAGONAL CRYSTALS </I></div> <div> 1. <A HREF="trigonal_crystals.htm" TARGET="_top" TITLE="TRIGONAL CRYSTALS"><U>TRIGONAL CRYSTALS</U></A></div> <div> 2. <A HREF="tetrahedral_molecular_crystals.htm" TARGET="_top" TITLE="TETRAHEDRAL CRYSTALS"><U>TETRA-HEDRAL  CRYSTALS </U></A></div> <div> 3. <A HREF="hexahedral_crystals.htm" TARGET="_top" TITLE="HEXAHEDRAL CRYSTALS"><U>HEXA-HEDRAL CRYSTALS</U></A></div> <div> 4. <A HREF="octa_hedral_crystals.htm" TARGET="_top" TITLE="OCTAHEDRAL CRYSTALS"><U>OCTA-HEDRAL CRYSTALS</U></A></div> <div> 5. <A HREF="rhombohedral_crystals.htm" TARGET="_top" TITLE="RHOMBOHEDRAL CRYSTALS"><U>RHOMBOHEDRAL CRYSTALS</U></A></div> <div> 6. <A HREF="hexagonal_molecular_crystals.htm" TARGET="_top" TITLE="HEXAGONAL CRYSTALS"><U>HEXAGONAL CRYSTALS</U></A></div> <div> 7. <A HREF="parallelepiped_molecular_crystals.htm" TARGET="_top" TITLE="PARALLELEPIPED CRYSTALS"><U>PARALLELEPIPED CRYSTALS</U></A></div> <bR> <bR> <bR> </td> <td valign="top" height=453 BGCOLOR="#66CCCC" TEXT="#080000"> <div> <I>PARALLELEPIPED CRYSTALS</I></div> <DIV ALIGN="LEFT"></DIV> <div> <TABLE BORDER="1" CELLPADDING="4" CELLSPACING="0" WIDTH="501" BORDERCOLORLIGHT="#993380" BORDERCOLORDARK="#993380" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFFF > <tR> <tD VALIGN=TOP COLSPAN=2 HEIGHT= 15 WIDTH="481"><div> PARALLELEPIPED SHAPED MOLECULAR CRYSTALS</div> </tD> </tR> <tR> <tD VALIGN=CENTER COLSPAN=2 HEIGHT= 119 ><NOBR><div>  1  HAVE 2 FACES THAT ARE PARALLELOGRAMS</div> <div>  2. HAVE 2 PAIRS OF PARALLEL SIDES</div> <div>      THAT ARE PERPENDICULAR </div> <div>      TO THE FOUR PARALLEL EDGES OF THE PARALLELOGRAM. </div> <div> ( MONO-CLINIC....<I>SINGLE INCLINE....</I>IS THE FORMER NAME FOR THESE CRYSTALS )</div> </NOBR></tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 191 ><NOBR><div> <IMG SRC="1055b5950.gif" border=0 width="181" height="149" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=CENTER><NOBR><div> <IMG SRC="1056b2ba0.gif" border=0 width="178" height="186" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 15 WIDTH="233"><div> A PARALLELPIPED CRYSTAL</div> </tD> <tD VALIGN=TOP WIDTH="246"><div> A VIEW OF THE SIDE & TOP</div> </tD> </tR> <tR> <tD VALIGN=CENTER ROWSPAN=2 HEIGHT= 171 ><NOBR><div> <IMG SRC="105ac6b70.gif" border=0 width="198" height="183" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> HERE YOU SEE THAT THE CRYSTAL </div> <div> HAS AN INCLINE OR SLOPE</div> <div> THEREFORE IT WAS CALLLED</div> <div>  MONO-CLINIC ( ONE INCLINE )</div> </NOBR></tD> <tD VALIGN=CENTER ROWSPAN=2><NOBR><div> <IMG SRC="1059b2b70.gif" border=0 width="178" height="183" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> HERE YOU SEE </div> <div> THAT IN THIS DIRECTION</div> <div> THE CRYSTAL IS PERPENDICULAR</div> <div> TO THE TABLE TOP</div> </NOBR></tD> </tR> <tR> </tR> <tR> <tD VALIGN=TOP COLSPAN=2 HEIGHT= 15 WIDTH="481"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="15" ALIGN="bottom" WIDTH="481" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=CENTER COLSPAN=2 BGCOLOR=#FFFFCC HEIGHT= 130 ><NOBR><div>    1. THE PARALLELPIPED CRYSTALS ARE FOUND IN ANODIC </div> <div>      <FONT SIZE="1" COLOR="#FFFFCC" FACE="Arial" > i</FONT>DEPOSITS OF THE ELECTRICITY CONDUCTING METALS</div> <div>    2. A FEW QUARTZ TYPE VERY TRANSPARENT MINERALS</div> <div>        MAKE PARALLELPIPED CRYSTALS ABOUT 10 CM. LONG</div> <div>    3. VERY FEW COMPOUNDS HAVE MONO-CLINIC, PARALLELEPIPED</div> <div>        CRYSTALS OTHER THAN THOSE USED TO MAKE AMALGAMS</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP COLSPAN=2 HEIGHT= 15 WIDTH="481"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="15" ALIGN="bottom" WIDTH="481" HSPACE="0" VSPACE="0"></tD> </tR> </TABLE></div> <div>     <A HREF="parallelepiped_molecular_crystals_m.htm" TITLE="PARALLELEPIPED CRYSTALS"><U>BACK TO TOP</U></A></div> <bR> </td> </tr></table></body>