Diorite Thin Section

Diorite ppl diorite plane polars.

Diorite thin section. Cross polarized light field width is 6 mm. Mafic minerals are biotite and hornblende in about equal proportions. This is a thin section of a diorite collected from near the ben cruachan dam called the quarry intrusion near loch awe in argyll.

Diorite in plane polars diorite in crossed polars another diorite in plane polars another diorite in crossed polars. Diorite in plane polarized light. Diorite in thin section thin section gigapans.

In addition you can now order matching hand specimens for each thin section. Diorite forms if this type of melt crystallizes below the surface. This is a good standard for a diorite and contains predominantly plagioclase feldspar an.

It usually contains little if any quartz. Diorite in hand sample. It typically contains very little quartz.

When purchased individually each 27 x 46 mm slide is packaged as an explano mount with a study sheet in a durable plastic sleeve. Students often use this salt and pepper appearance as a clue to the identification of diorite. In optical mineralogy and petrography a thin section or petrographic thin section is a laboratory preparation of a rock mineral soil pottery bones or even metal sample for use with a polarizing petrographic microscope electron microscope and electron microprobe.

Photomicrograph of thin section of granodiorite from slovakia in crossed polarised light. Diorite two small samples of diorite diorite intruded by granite pegmatite dike. Diorite is composed primarily of plagioclase feldspar amphibole and pyroxine minerals with small amounts of biotite mica.