Modern Mining ›› 2024, Vol. 40 ›› Issue (04): 58-.
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Honglongchang copper deposit is one of the important metal deposits in Yuanjiang copper
deposit area. The geotectonic location is located on the northeast side of the Honghe deep fault in the Sich⁃
uan-Yunnan platform anticline.Based on the previous research results，combined with the new progress of
exploration and research in the mining area in recent years，by combing the regional metallogenic back⁃
ground and geological characteristics of the mining area，in order to obtain new understanding in the metallo⁃
genic regularity of the deposit.The research shows that the metamorphic rock series and complex structural
pattern of the regional Kunyang group provide extremely favorable metallogenic background conditions.The
Honglongchang copper deposit is strictly stratabound. The ore bodies mainly occur at the bottom of the milky
dolomite or overlying gray dolomite in the second member of the Luoxue Formation.The secondary folds and
secondary faults of the Qingyang fault in the mining area control the distribution of strata and mineralization，
providing thermal dynamic conditions and occurrence space for mineralization.The deposit is mainly formed
in the oxidation-reduction environment，and the minerals are mainly accumulated in the low-lying areas of
the weak reduction environment，which belongs to the typical sedimentary-metamorphic-modified layered
copper deposit.The ore-bearing strata and strong tectonic activities in the mining area can be used as impor⁃
tant prospecting indicators. The next step should be to strengthen the geological prospecting work on the foot⁃
wall of the F3 fault and the deep edge of the northeast section of the main ore body.
