Comprehensive
Geophysical
and
Geochemical
Prospecting
Model
of
the
Shiyaogou
Molybdenum-Tungsten
Deposit
in
Luanchuan
County
LÜ Xianhe LIU Juntao HU Honglei NING Yong WANG Haiyong HUO Qinghua
2025, 54(7):
233-242.
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81 )
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The
Shiyaogou
molybdenum-tungsten
deposit
in
Luanchuan
County
is
located
at
the
junction
of
the
southern
margin
of
the
North
China
Block
and
the
North
Qinling
Orogenic
Belt. This
area
has
experienced
multiple
phases
of
tectonic
movements,and
Yanshanian
granite
bodies
are
widely
exposed
in
the
region,which
provides
favorable
geological
conditions
for
mineralization. According
to
the
1 ∶50
000
comprehensive
geochemical
anomalies,combined
with
the
geological
characteristics,
geochemical
and
geophysical
characteristics
of
the
deposit,the
internal
relationships
among
geological,geocheical
and
geophysical
information
were
systematically
analyzed,and
the
comprehensive
geological,geochemical
and
geophysical
prospecting
model
was
established. This
model
integrates
geological
background
analysis,geochemical
anomaly
tracing
and
geophysical
deep
detection,realizing
the
complementary
advantages
of
different
methods,and
has
achieved
ideal
prospecting
results
in
the
application
practice
of
this
area. The
research
shows
that:①
Geological
survey
preliminarily
identified
the
metallogenic
geological
background
of
the
deposit. Molybdenum
mineralization
mostly
occurs
in
the
outer
contact
zone
and
near
the
inner
contact
zone
between
the
rock
mass
and
the
Sichakou
Formation,and
molybdenum-tungsten
ore
is
closely
related
to
the
Early
Cretaceous
intrusive
rocks. ②
Through
the
1 ∶10
000
soil
profile
survey,the
comprehensive
anomalies
of
copper,tungsten
and
molybdenum
were
delineated. The
soil
anomalies
basically
coincide
with
the
concentration
centers
of
the
1 ∶50
000
stream
sediment
anomalies,indicating
that
this
area
has
the
local
enrichment
characteristics
of
metallogenic
elements
such
as
Mo,W
and
Bi. ③
The
results
of
IP
intermediate
gradient
survey
and
IP
sounding
show
that
there
are
obvious
high-resistance
and
high-polarization
anomalies
in
this
area,which
basically
coincide
with
the
occurrence
positions
of
the
orebodies. ④
By
comprehensively
utilizing
geological,geochemical
and
geophysical
methods,an
comprehensive
prospecting
model
for
the
Shiyaogou
molybdenum-tungsten
deposit
was
established,providing
a
scientific
basis
for
the
metallogenic
prediction
in
this
area. ⑤
According
to
the
Comprehensive
information
prospecting
model,a
total
of
1
molybdenum
orebody,10
molybdenum
mineralized
bodies,4
tungsten
mineralized
bodies
and
1
molybdenum-tungsten
mineralized
body
were
identified
in
the
Shiyaogou
molybdenum-tungsten
deposit. Among
them,the
12
#
molybdenum
orebody
is
divided
into
two
sections,east
and
west,with
a
controlled
length
of
135
m,a
thickness
of
0. 94~ 2. 16
m,and
a
grade
of
0. 112% ~ 0. 149%,achieving
remarkable
exploration
results.
