Examine the accompanying photo of a mineral that has several...

Name: Problem 6, Chapter 2: Earth Science
Uploaded: 2020-08-28T17:24:29-08:00
Duration: 1 min 9 s
Channel: Mayukh Banik
Description: Examine the accompanying photo of a mineral that has several smooth, flat surfaces that resulted when the specimen was broken. a. How many flat surfaces are present on this specimen? b. How many different directions of cleavage does this specimen have? c. Do the cleavage directions meet at 90-degree angles?

Examine the accompanying photo of a mineral that has several smooth, flat surfaces that resulted when the specimen was broken. a. How many flat surfaces are present on this specimen? b. How many different directions of cleavage does this specimen have? c. Do the cleavage directions meet at 90-degree angles?

Examine the accompanying photo of a mineral that has several smooth, flat surfaces that resulted when the specimen was broken.
a. How many flat surfaces are present on this specimen?
b. How many different directions of cleavage does this specimen have?
c. Do the cleavage directions meet at 90-degree angles?

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Key Concepts

Mineral Cleavage

Mineral cleavage is the property of a mineral to break along specific directions where atomic bonding is weakest. This process results in smooth, flat surfaces that reflect the internal structure of the mineral, and it is a key factor in mineral identification.

Cleavage Planes

Cleavage planes are the distinct flat surfaces that form when a mineral cleaves. These surfaces correspond to planes of weakness within the crystal structure, and their number and orientation can provide clues about the mineral's crystallography.

Cleavage Directions

Cleavage directions refer to the different orientations in which cleavage occurs within a mineral. Identifying how many distinct directions there are helps in understanding the symmetry and internal arrangement of the mineral's atoms.

Cleavage Angles

Cleavage angles describe the angles at which the cleavage planes intersect. These angles are characteristic of a mineral's internal crystal geometry and are critical for determining its crystallographic class.

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