“pegmatite”造句，怎麼用pegmatite造句

The diabase and lamprophyre are typical mantle source rock while the granite pegmatite is typical crustal source rock.

Sohlieren type pamatites and injected pegmatite veins, differentiation of some elements such as volatiles and isotopes in different phases are important symbols of the liquid immiscibility.

A great quantity of fluid-melt inclusions was found in early-stage formed fluorite and quartz from aegirine-augite-barite pegmatite vein and carbonatite vein in Mianning REE deposit of Sichuan.

Spodumene is a typical kind of pegmatite, which forms mainly in the ore vein of granite-pegmatite.

Malipo emerald deposit in Yunnan Province has two types of pegmatite vein and greisen vein.

Li- Be-Ta-Nb-bearing deposits in Lianyun Mountain occurred in Shangshi on the south wing of Lianyun Mountain anticline, the densely distributed pegmatite area.

The research on geochemical characteristics and isotope age suggests that the deposit belongs to a magma-metasomatic pegmatite type deposit related to Fufang and Huitong granitic mass in genesis.

At pegmatite contacts the composition changes to chalcopyrite, millerite, pyrite, and violarite accompanied by magnetite and hematite.

Beside fractional crystallization model, liquid immiscibility of Fluorine-rich granite magma is an important mechanism to form pegmatite and pegmatite type deposit.

The types of deposits basically are differential metasomatism in the later magma, pneumatolytic hydrothermal process, pegmatite process, residual deposits and placer deposits.