场口场区与赌石特征(达马砍)

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6、ance for a, to b vertical box distance for b, list can measured达马坎位于香洞场区西南，地处雾露河下游，包括格地磨、宋堆、瓦磨、八西东、拱马磨。该场区河谷较宽，地形平坦，形成冲积小平原，全部为次生矿，翡翠砾石层厚度较小，一般为5-7米左右。基底为深灰色片岩，由于风化而成为黑色的泥质层，当地人称为“胶泥层，基底之上为黄色层，最上面为砂泥层。达马坎翡翠砾石多为白砂皮和黄砂皮，没有黑砂皮，这也是达马坎与其它场区的重要区别之一。1达马砍翡翠砾石滚圆普遍较好，翡翠砾石个体较小，5kg以上的很少，这与场区所处的地理位置有关，达马坎处于雾露河下游

7、，由于地处平原，水流速减缓，所搬运的砾石自然较小。2达马坎原石很受赌石爱好者欢送，因为出所谓“黄夹绿，很多初学者用手电筒去看，超级漂亮，误认为这是冰种、玻璃种，其实灯光下的黄色是翡翠皮壳下的雾，并不是真正意思上的黄翡。3达马坎的绿色多数取货颜色偏蓝，对于这点要特别注意，达马坎还有一种蜡壳的翡翠没有雾，切开一般是皮肉不分。4达马砍出产的小水石，因经过较长时间和较远距离的搬运、滋润，皮壳光滑，常产顶级的玻璃种，所以在玻璃种翡翠中，质量最好的当数达马坎而非摩西沙。5达马坎场区不同场口之间翡翠皮壳表现差异较大，其中大马坎场口的翡翠皮壳较厚，呈灰色，且皮肉相杂，皮壳下必有雾，雾色多呈红、黄、黑、白色，其

8、中红、黑雾的底子灰，黄、白雾的质地好。6一般“十雾九有水，但凡皮壳与黄色相杂难分的，其玉色偏蓝，并多显现蜂窝状态，颜色有褐色，红黄色，灰色，少见腊壳。7达马砍石几乎都有雾层，其主要特征为色串皮、雾串皮，雾裹色、雾吃色，皮肉难分。8大马坎半山半水石黄壳黄雾且皮薄，可赌性强。假设厚皮而雾黑，那么底灰水短，绿色往往偏蓝，又无反弹力，不可赌。下列图为达马坎黄夹绿半明半赌翡翠，重约2KG。原石描述：达马坎翡翠毛料，料种老，肉细，绿色多，皮已根本去净，半明半赌料。场口特点：第三层矿，多见黄翡皮、橙黄翡皮、红黄翡皮，也有风化皮。皮下往往有“黄雾即黄翡，黄翡中有绿色的俗称“黄夹绿，外皮相对较薄，块度小者多见，

9、也有大块的。常产出豆绿或瓜绿色，也有皮下绿，偶尔会有水头好的满绿高翠、团块状的高翠黄杨绿色及秧苗绿。裂纹相对较少，种的变化较大，从豆种到玻璃种都有，以老场豆种、糯化豆种和糯化种为主，中粗玉质至细腻玉质都有。种老底好，黄翡皮及红黄翡皮，肉以紫罗兰色和白色居多，全黄翡的较为少见，冰黄翡夹绿色那么极其稀少，故有赌性，尤其是风化皮的“蒙头料，风险相对较大。下列图为达马坎老场黄夹绿半明半赌翡翠原石，为第二层橙黄皮，种老底好。 下列图是大马坎水石，糯冰种飘兰花，可取手环，种老，取货高。下列图是大马坎“一窝鸡，很好的手把件料，种老，色彩丰富，成品表现层次清楚，是雕刻家的钟爱。 下列图是典型的大马坎半山半水石，这类石头是大马坎原石中质量最好的，以黄夹绿居多，如能切出手环，那么将十分昂贵。这块石头的表皮为细沙黄红皮，皮壳上有一条绿色蟒带，沙细表示肉质细腻，一般可达冰或糯化。有蟒带表示有