英语语法分析

The origin of the deposit belongs to Quarternary eluvial placer type.

矿床成因属第四纪残积型。

Genetically, it is an eluvial deposit produced by weathering, controlled by the stratigraphy and lithology.

矿床成因属风化残积型，受地层、岩性的控制。

Eluvial tantalite: eluvial tantalite is found in rubble consisting of fragments and pebbles of varied composition.

残积层钽铁矿：残积层钽铁矿发现于由碎片和小鹅卵石成分的碎矿中。