Wei Liu

5 Questions 32 Answers 0 Followers

Questions related from Wei Liu

Whether the structure is volcanic vesicular / amygdaloidal structure or not?

Attached are five photos. Photos entitled C2b17_1 and C2b17_2 are photomicrographs of same a picture that are respectively in orthogonal- and plane-polarized light. The photomicrographs show...

06 August 2016 3,831 6 View

Why were so many ferromagnesian minerals included in the plagioclase phenocrysts?

Attached is a photomicrograph of gabbro. In the center a plagioclase phenocryst occurs that includes many clinopyroxene and hornblende minerals. The phenocryst was albitized. The matrix around the...

06 August 2015 2,361 7 View

How do you distinguish metamorphic amphibole from magmatic hornblende?

My samples were collected from a suite of metamorphic basic intrusive rocks that include plagioclase amphibolite shist, troctolite and anorthosite. These rocks consist of hornblende, plagioclase...

08 November 2014 8,053 10 View

Why does calcite coexists with quartz in the microgranular enclaves that are hosted by monzonite?

The mafic microgranular enclaves consists of plagioclase laths and chlorite. The presence of skeletal augite within chlorite suggests that the latter were altered from augite. The quartz and...

31 October 2014 5,422 10 View

Can someone suggest a reference that describes and explains mafic magmatic enclaves hosted by another mafic magmatic enclave in granodiorite?

I have several specimens that contain millimeter-sized mafic magmatic enclaves hosted by centimeter-sized mafic magmatic enclave in granodiorite and want to know their genesis.

20 November 2013 4,235 2 View