Oligoclase Thin Section

Orthoclase is frequently known as potassium feldspar or k spar and is easily distinguished from the plagioclase feldspars in hand sample by its lack of striations.

Oligoclase thin section. You can find the explanation on the alkali feldspar page. Oligoclase is a plagioclase feldspar intermediate between albite and anorthite. A 8 15 b 12 78 c 8 5 z 5.

An important connecticut locality is timms hill haddam middlesex co connecticut. Oligoclase na0 9 0 7ca0 1 0 3al1 1 1 3si2 9 2 7o8 c 2001 mineral data publishing version 1 2 crystal data. This feature is not available right now.

Please try again later. Much of the feldspar in rock on the island of manhattan new york city is oligoclase. Alpha 94 016 beta 116 3333 gamma.

You can find the explanation on the plagioclase feldspar page. Oligoclase ca 10 30 na 90 70 from greek words meaning little and fracture. Plagioclase thin section photomicrographs are taken in plane polarized light and cross polarized light and can easily be recognized under the microscope.

In thin section plagioclase feldspar grains often look like they re sprinkled with dirt ppl or tiny confetti xpl. کانی شناسی اولیگوکلاز زیر میکروسکوپ. In color it is usually white with shades of grey green or red.

Nα 1 533 1 543 nβ 1 537 1 548 and nγ 1 542 1 552. Atlas of minerals in thin section. Na ca si al 4 o 8.