<p style="WORD-BREAK: break-all; TEXT-INDENT: 28pt; mso-char-indent-count: 2.0;"><font face="宋体"><span style="FONT-SIZE: 14pt; COLOR: black; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">黑色的表皮应该是腐殖质类的有机碳引起的。</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: tahoma;">
<p></p></span></font></p><p></p><p></p><p style="TEXT-INDENT: 28pt; mso-char-indent-count: 2.0;"><span style="FONT-SIZE: 14pt; COLOR: blue;"><font face="宋体">真品有漂移感裂开<span lang="EN-US">----</span>;自然态分层开裂<span lang="EN-US">.... </span>。<span lang="EN-US">
<p></p></span></font></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28pt; mso-char-indent-count: 2.0;"><span style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">裂纹有隙处也会受自然的侵蚀而塌陷。</span><span style="FONT-SIZE: 14pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">极难以靠人工制作出来的。</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: red;">
<p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28pt; mso-char-indent-count: 2.0;"><span style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;"></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28pt; mso-char-indent-count: 2.0;"><span style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">大部分裂痕都有矿物溢出</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: tahoma;">,</span><span style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">而沿着裂痕高出玉表</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: tahoma;">,</span><span style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">此现象在史前古玉中才有表现</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: tahoma;">,</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28pt; mso-char-indent-count: 2.0;"><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: blue; FONT-FAMILY: tahoma;"></span><span style="FONT-SIZE: 14pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">此现象是人为不可仿的</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: red; FONT-FAMILY: tahoma;">.</span><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: blue;">
</span></p><span lang="EN-US" style="FONT-SIZE: 14pt; COLOR: blue;"><p><font color="#ff0033" size="5">古玉开裂.自然态.为开裂边有解理状残痕.<需放大观查>.痕纹非直线.应为撕裂状.裂纹口边有溢出状物质.</font></p><p><font color="#ff0033" size="5">仿品裂直并向下或斜下走向.而真品有漂移感裂开</font></p><p><font size="3">撕裂型也叫横向剪切型,在剪应力作用下,裂纹面上下错开,裂纹沿原来的方向向前扩展,称撕裂型裂纹,也叫3型裂纹。</font></p><p><font size="3">高古玉在土下墓中长时间受地引力,温差,游离氧,物理和化学的综合作用,使原本较弱的晶格化学键发生“裂变”而产生绺纹,在土下产生的绺纹绝大多数携带碱性离子而生色相,时而展现出晶格内的弯曲形色带或色丝。这是高古玉的一道特有现象!!</font></p><p><font size="3">古玉上的裂痕多是经历极缓慢的压力和侵蚀才形成的,因此常常是玉的表面在中间有裂,而裂纹两头不到。或是从边上看裂的挺大,却并不到头完全裂开,裂纹有隙处也会受自然的侵蚀而塌陷。极难以靠人工制作出来的。</font></p><p></p></span><p><a href="http://www.rn-hswh.com/bbs/UploadFile/2007-11/2007111111272872297.jpg" target="_blank"><img title="dvubb" alt="图片点击可在新窗口打开查看" src="http://www.rn-hswh.com/bbs/UploadFile/2007-11/2007111111272872297.jpg" border="0" style="WIDTH: 500px;"/></a></p><p><br/> </p><p><font color="#f73809" size="4">此浅层开裂.之因不排除清洗表浆层后内应力做用在空气与热度做用下开裂<己有实列明></font></p>
[此贴子已经被作者于2007-11-11 11:38:42编辑过]
|