民间寻找砂金矿的某些经验
黑龙江省是我国砂金主要产区，开采历史悠久，民间寻找砂金矿积累了丰富的经验。 1．看“三山”、“四不露”，一即“座山”、“关门山”、“迎门山”、“沟前不露口”“沟后不露堵”、‘沟中不露风”和“全沟不露骨”。
“座山”为河谷上游的产金山。它以高大（不露堵”）和“马牙石”脉（石英）多为特征。经验认为，有座山存在在河谷中形成砂金金矿的可能性就越大。“关山门 ”即河谷钳形山，又称“关门嘴子”。“迎门山”为河谷转弯处河流的迎面山，又称“不露嘴”，“不露口”。这种地貌都是砂金成矿的有利标志。在“关门山”的上方或“迎门山”前方的河谷内，都是砂金富集的地段。“不露风”又称“不露腰”，产砂金的河各两侧山要比较高些，“风”好似刮不出去。“不露骨”指河床底板的岩石不出露，表明河谷处于堆积阶段。
2．“小沟出嘴”、“大沟有腿”、“不大不小在肚里”。小沟指长度在3km以下的小沟谷。“小沟出嘴”是讲要注意在小沟出口处寻找砂金矿。长度在lOkm 以上时为大沟。“大沟有腿”即在较大的河谷中发现了砂金矿，那么在其上游的某些支谷里也有可能找到砂金矿。反之，如支谷有砂金矿，在主谷里也可能有砂金矿存在。不大不小（中沟）长度3－10km,主要成矿在本谷内。
Some experiences of folk looking for gold mine
黑龙江省是我国砂金主要产区，开采历史悠久，民间寻找砂金矿积累了丰富的经验。 1．看“三山”、“四不露”，一即“座山”、“关门山”、“迎门山”、“沟前不露口”“沟后不露堵”、‘沟中不露风”和“全沟不露骨”。
China's Heilongjiang province is the main producing area of placer gold, mining has a long history, folk looking for gold has accumulated rich experience. 1. See "three mountains", "four does not reveal, a" mountain "," closed "," Ying door mountain "," Qian gou not dew "" ditch after gel blocking "," ditch not dew "and" Quan gou not explicit.
“座山”为河谷上游的产金山。它以高大（不露堵”）和“马牙石”脉（石英）多为特征。经验认为，有座山存在在河谷中形成砂金金矿的可能性就越大。“关山门 ”即河谷钳形山，又称“关门嘴子”。“迎门山”为河谷转弯处河流的迎面山，又称“不露嘴”，“不露口”。这种地貌都是砂金成矿的有利标志。在“关门山”的上方或“迎门山”前方的河谷内，都是砂金富集的地段。“不露风”又称“不露腰”，产砂金的河各两侧山要比较高些，“风”好似刮不出去。“不露骨”指河床底板的岩石不出露，表明河谷处于堆积阶段。
"The mountain" is the valley of the valley. It (not exposed to tall block "and" Ma odontolith ") pulse (quartz) for feature. Experience that the possibility of a mountain formation in the valley of gold placer gold is bigger. "The gate" is also called "a mountain valley, guanmenzuizi". "Ying Shan" for the river at the turn of the river at the head of the mountain, also known as "not open mouth", "do not open mouth". This landscape is favorable sign of the gold placer mineralization. In the "top Guanmenshan" or "yingmen mountain" in front of the valley, is the gold enrichment area. "Wind" is also called "midriff", produced the river on both sides of the mountain to the placer gold is relatively high, "wind" is not blowing out. "No explicit" refers to the bed rock floor exposed, that valley in the accumulation stage.
2．“小沟出嘴”、“大沟有腿”、“不大不小在肚里”。小沟指长度在3km以下的小沟谷。“小沟出嘴”是讲要注意在小沟出口处寻找砂金矿。长度在lOkm 以上时为大沟。“大沟有腿”即在较大的河谷中发现了砂金矿，那么在其上游的某些支谷里也有可能找到砂金矿。反之，如支谷有砂金矿，在主谷里也可能有砂金矿存在。不大不小（中沟）长度3－10km,主要成矿在本谷内。
2 "small mouth", "big ditch legs" and "small". The minor groove refers to the length of the following in the 3km minor groove valley. "Small mouth" is for gold in the sand ditch exit. Length at lOkm above for the big ditch. "Big ditch legs" that is found in the larger Valley in the sand gold mine, then some of the valley in its upper reaches are also likely to find a sand gold mine. On the other hand, if there is a sand gold deposit in the valley, there may also be a sand gold deposit in the main valley. Size (in trench) length of 3 10km, the main mineralization in this valley.
