<P><FONT size=5>感谢小学生石友{这名字叫的,对不住啊}和冷石友的提问。回答的晚了,见谅。<IMG src="http://www.cnssscp.com/bbs/images/Emotions/20.gif"></FONT></P>
<P><FONT size=5>为什么怀疑是染色的呢?</FONT></P>
<P><FONT size=5>首先我们要掌握一些光学和衍射学的原理。您看,作品光感怠闷而光线的衍射性差,局部可看见染色的侵蚀痕迹。具体来讲:</FONT></P>
<P><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">染色寿山石的石皮与颜色的鉴别</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><BR>1</SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">.石皮的鉴别</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><BR></SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">染色寿山石的石皮或用颜料涂染,或用胶水调石粉涂抹其表,或泡药水高压加温,再经磨制而成。然而,这种假石皮松而脆,颗粒粗大,浑浊不透,千结如疤,难以受刀。辨认时,一经摸或加油,不久,其图文均不见。雕刻时也只能刻制粗线条景物,而不能精雕细刻,通常使用薄意雕,工较粗。另外在宝石显微镜下放大观察,染色寿山石缺少过渡,有时甚至可以见到气泡;并且皮的结构和石的结构不同;当局部皮脱落时,可见明显的表皮粘和的特征。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><BR style="mso-special-character: line-break"><BR style="mso-special-character: line-break"></SPAN></P> |