negroes地质外文文献翻译中英文对照

2021年1月22日发(作者：唐治平)


长
安
大
学
资
源
学
院



英语文献翻译










































































































学



院




地球科学与资源学院

















专

业




资源勘查工程


















学生姓名



张桃

























学



号




2




















指导教师



张亚敏

































1
/
13
2015
年
6
月
18
日


Title:Orthomagmatic ore deposits
agmatic ore deposits
The magma contains a certain number of metal and volatile
components of the silicate melt. All kinds of magma after
crystallization and differentiation, make the forming
materials dispersed in the magma gathered and formed
this deposits is called magmatic deposits.
Magmatic
deposits
formed
in
the
magmatic
stage,
the
source
of the material of the deposit is the main ore-bearing magma.
Magmatic deposits is the product of the magma by
crystallization and differentiation, and generally have the
following properties:
1
、
Deposits have the mainly relationship with the mafic
and ultramafic a small number of magmatic deposits
with alkaline rocks or magmatic carbonatite-related.
Mineralization
and
diagenesis
often
begin
at
the
same

this
is
typical
of
syngenetic
ore
deposits.
Few
mineralization
of the magmatic deposits may be continued to a later time,
but generally does not exceed a total period of magmatic
activity.
2
、
The magmatic deposits ore body majority present
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stratiform,
lenticular
and
podiform
and
so

they
produced
in the magma body,and the wall rock of containing ore is the
mother cases,orebody presenting vein and stockwork
enter the wall rock which outside of the mother rock Between
the ore body and the wall rock generally is gradual change
or
rapid
gradual
change

penetration
magmatic
deposits have the clear boundaries with the wall rock.
3
、
Except the rare and rare earth elements deposits of
the magmatic carbonatite due to special causes have some
alteration about the wall rock,the vast majority of magmatic
deposits surrounding rock does not have a significant
alteration phenomenon.
4
、
The
ore
and
the
wall
rock
basically
have
the
same
mineral
composition, when the useful minerals of the rock body
aggregate and reach a certain size,they become the orebody.
5
、
The ore of magmatic deposits often
have,disseminated,the banded,eye porphyritic,dense
massive,brecciated
and
so
on,ore

ores
structure
can be broadly divided into the following categories:
ure
sub-the
different
magmatic
condensate
crystalline
or stacking interactions; t the structure of the
immiscible fluid crystallization process t the
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changes in the structure of the physical and chemical
etic structure.
6
、
The magmatic deposits forming temperature is high,
generally between 1200 to 700
°
C. The mineralization depth
changes,generally formed in the ground a few kilometers to
tens of kilometers.
formation conditions of magmatic deposits
Magma deposits are mainly derived from the magma, it is
the
combined
effects
of
the
product
by
a
variety
of
geological
factors, which playing a leading role is the geochemistry of
ore-forming elements traits, the magmatic rock conditions,
tectonic conditions and physical and chemical conditions and
so on.
1
、
Control the conditions of magmatic rocks formed by
magmatic deposits
Magma is the main provider of the metallogenic material
of the magmatic deposits and the medium of containing mineral
ore,how much of the
content
of useful
components
of magma is the possibility of the formation of magmatic
deposits.
ic rocks metallogenic specialization
Metallogenic specialization of magmatic rocks in the
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/
13
genesis of magmatic rocks with endogenous deposits showed
regular
contact,
and
specific
types
of
magmatic
rocks
are
often
produced specific types of deposits.
a)With mafic and ultramafic intrusive rocks related
deposits
Mafic and ultramafic rock is the complex igneous complex
formed by the combination of a variety of rock types, rock
types from a single rock composed of rock mass is relatively
size of the rock mass ranging mostly small,and rock
strains, rock cover, rock, bedrock is the most common form
of the rock mass. With facies and the different
combinations,the mafic and ultramafic rocks can be divided
into three types.
b)Mineral deposits associated with syenite, nepheline
syenite and carbonate igneous complex
Relating to magmatic deposits of these rocks are mostly
produced
with
the
form
of
rock
strain,the
different
components
of rock mass facies zone often has ring distribution.
role of the volatile components in the magma
The magma volatile components have the low melting
point,highly
volatile
and
they
can
delay
the
condensation
rate
of the magma, make the magma have more fully differentiation.
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ic assimilation have an influence on the
mineralization of the magma Deposits
one period of magma intrusion on control of the
mineralization
2
、
Tectonic conditions that control the formation of
magmatic deposits
Tectonics have a major impact on the type of magmatic
deposits,
distribution,
the
most
magmatic
deposits
associated
with
mafic
and
ultramafic
igneous
rocks
on
the
Causes
and
space.
Mafic
and
ultramafic
magma
formed
by
partial
melting
of
mantle
material,so the deep fault cuts through the crust to reach
the upper mantle have a strict control effect on the mafic,
ultramafic rocks and magmatic deposits which have some
relationship with them.
ic deposits formation and its characteristics
1
、
The
process
of
the
magma
’
s
useful
components
analysis,
aggregation
and
positioning
is
called
magmatic
mineralization.
Because
the magmatic
deposits mafic -
ultramafic
petrogenesis
process is very complex, the mineralization also is
ing to the way and feature of the
mineralization,magmatic mineralization can be divided into
four categories,the crystallization differentiation
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