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GOLD OCCURRENCE IN THE LAOZUOSHAN GOLD DEPOSIT IN HEILONGJIANG PROVINCE

Wang Ming-can

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Abstract

The primary ores of the Laozuoshan gold deposit is a heavily disseminated and massive gold ores the main metallic mineral of which is pyrrhotite that account for approximately 11% occurring in migmatitic granite in disseminative and massive form and its gangue minerals take about 80% with quartz and feldspar as main minerals.Gold content in ore is 7.25×10~(-6),and gold mineral is silver containing natural gold whose range of grain size is between 0.074～0.0005mm.Pyrrhotite is the most important gold carrying mineral in the deposit and nearly 67.02% of the gold occurs in pyrrhotite in form of natural gold.

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What this paper is about

The primary ores of the Laozuoshan gold deposit is a heavily disseminated and massive gold ores the main metallic mineral of which is pyrrhotite that account for approximately 11% occurring in migmatitic granite in disseminative and massive form and its gangue minerals take about 80% with quartz and feldspar as main minerals.Gold content in ore is 7.25×10~(-6),and gold mineral is silver containing natural gold whose range of grain size is between 0.074～0.0005mm.Pyrrhotite is the most important gold carrying mineral in the deposit and nearly 67.02% of the gold occurs in pyrrhotite in form of natural gold.

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Available abstract

The primary ores of the Laozuoshan gold deposit is a heavily disseminated and massive gold ores the main metallic mineral of which is pyrrhotite that account for approximately 11% occurring in migmatitic granite in disseminative and massive form and its gangue minerals take about 80% with quartz and feldspar as main minerals.Gold content in ore is 7.25×10~(-6),and gold mineral is silver containing natural gold whose range of grain size is between 0.074～0.0005mm.Pyrrhotite is the most important gold carrying mineral in the deposit and nearly 67.02% of the gold occurs in pyrrhotite in form of natural gold.

Key concepts: Pyrrhotite, Geology, Gangue, Mineral, Gold ore, Quartz, Geochemistry, Mineralogy

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