0
Do Orthoclase and plagioclase feldspars have quite different forms of cleavage?
Wiki User
∙ 11y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What physical properties distinguish plagioclase feldspars from orthoclase feldspars?
One physical property that distinguishes plagioclase feldspars from orthoclase feldspars is their cleavage. Plagioclase feldspars typically exhibit good cleavage in two directions at right angles, while orthoclase feldspars show perfect cleavage in one direction. Another distinguishing feature is their color. Plagioclase feldspars are usually white to gray, while orthoclase feldspars can be white, pink, or other colors.
Is orthoclase a rock or a mineral?
Orthoclase feldspar is a tectosilicate mineral which is most commonly found in igneous rock. It has a Mohs hardness of 6 and has two cleavage planes which occur at right angles to each other. It is the potassium endmember of the feldspar group of minerals and is also referred to as alkali feldspar or K-spar. Orthoclase will appear in colors from white to deep pink, but has a white streak.
What are three different characteristics of cleavage and fracture?
contrast cleavage fracture by writing three different characteristics of each
What is silvers cleavage?
Silvers Cleavage Is Silver Doesn't Split .
How many directions of cleavage do the feldspar minerals have?
Two directions of cleavage, at 90 degrees to each other.
What physical properties distinguish plagioclase feldspars from orthoclase feldspars?
One physical property that distinguishes plagioclase feldspars from orthoclase feldspars is their cleavage. Plagioclase feldspars typically exhibit good cleavage in two directions at right angles, while orthoclase feldspars show perfect cleavage in one direction. Another distinguishing feature is their color. Plagioclase feldspars are usually white to gray, while orthoclase feldspars can be white, pink, or other colors.
What is the difference between plagioclase and orthoclase rock?
They are identical (hardness, streak, ect) barring the chemical composition however plagioclase has striations on the cleavage surface.
Which mineral has a hardness of 6 and has cleavage?
Orthoclase Feldspar.
How can someone identify quartz in an igneous rock from plagioclase?
quartz will have conchidal fracture...plagioclase will have 2 sets of cleavage near 90 degrees and some striations quartz will have conchidal fracture...plagioclase will have 2 sets of cleavage near 90 degrees and some striations
Is orthoclase a rock or a mineral?
Orthoclase feldspar is a tectosilicate mineral which is most commonly found in igneous rock. It has a Mohs hardness of 6 and has two cleavage planes which occur at right angles to each other. It is the potassium endmember of the feldspar group of minerals and is also referred to as alkali feldspar or K-spar. Orthoclase will appear in colors from white to deep pink, but has a white streak.
What is Feldspars cleavage?
2 at 90 degreesHere is a discussion on feldspar.It says it has uneven fracture and cleavage in 2 directions.http://www.theimage.com/mineral/feldspar/index.htm
How does the cleavage of feldspar differ from the cleavage of mica?
Biotite (black mica) and muscovite (white mica) are both minerals that have perfect basal cleavage--one direction. It cleaves into thin sheets. Feldspars (albite, oligoclase, andesine, labradorite, bytownite, anorthite) have good cleavage in two directions at nearly right angles, poor in a third direction.
Tendency to break along smooth flat surfaces?
Many minerals have "cleavage" that causes them to split on flat cleavage planes. Such minerals include micas (muscovite, biotite. phlogopite), calcite, gypsum, and feldspars. Cleavage is the result of the minerals' crystal structure that has weaker chemical bonds aligned in planes.
What are three different characteristics of cleavage and fracture?
contrast cleavage fracture by writing three different characteristics of each
Is the cleavage for a mineral always the same for that mineral?
Yes, all different samples of that mineral will have the same cleavage.
Is the cleavage for a mineral is always the same for that mineral?
Yes, all different samples of that mineral will have the same cleavage.
How are fracture and cleavage and cleavage different?
Cleavage- in geolohy, the tendency of a mineral to splitalong specific planes of weakness to format smooth flatSurface.Fracture- the manner in which a mineral breaks alongeither curved or irregular
