Podcast
Questions and Answers
What is the primary difference between cleavage and fracture in minerals?
What is the primary difference between cleavage and fracture in minerals?
Calcite exhibits 3 planes of cleavage at 90 degrees.
Calcite exhibits 3 planes of cleavage at 90 degrees.
False (B)
What is the term used to describe the way a mineral breaks when it exhibits no cleavage?
What is the term used to describe the way a mineral breaks when it exhibits no cleavage?
Fracture
Quartz typically exhibits a ______ fracture.
Quartz typically exhibits a ______ fracture.
Signup and view all the answers
Match the following mineral habits with their corresponding descriptions:
Match the following mineral habits with their corresponding descriptions:
Signup and view all the answers
Which of these minerals exhibits 3 cleavage planes at 90 degrees?
Which of these minerals exhibits 3 cleavage planes at 90 degrees?
Signup and view all the answers
A mineral with a dipyramidal habit will have 6 faces shaped like rhombi.
A mineral with a dipyramidal habit will have 6 faces shaped like rhombi.
Signup and view all the answers
Describe the crystal habit known as 'bladed'.
Describe the crystal habit known as 'bladed'.
Signup and view all the answers
Flashcards
Cleavage
Cleavage
The ordered breakage of a mineral along specific planes due to weaker bonds.
Fracture
Fracture
The unordered breaking of a mineral without specific planes.
Calcite Cleavage
Calcite Cleavage
Calcite exhibits 3 planes of cleavage that are not at 90 degrees.
Quartz Fracture
Quartz Fracture
Signup and view all the flashcards
Muscovite Cleavage
Muscovite Cleavage
Signup and view all the flashcards
Feldspar Cleavage
Feldspar Cleavage
Signup and view all the flashcards
Fluorite Cleavage
Fluorite Cleavage
Signup and view all the flashcards
Cubic Habit
Cubic Habit
Signup and view all the flashcards
Study Notes
Mineral Identification Exam 1 Prep
- Cleavage vs. Fracture: Cleavage is the ordered breakage of a mineral along specific planes due to weaker bonds. Fracture is the unordered breaking of a mineral, like a demolition without rhyme or reason.
Cleavage Example
- Calcite exhibits 3 cleavage planes not at 90 degrees.
Fracture Example
- Quartz exhibits conchoidal fracture instead of cleavage.
Types of Cleavage
- 1 Direction: Basal cleavage (Muscovite)
- 2 Directions at 90°: Pinacoidal cleavage (Feldspars)
- 2 Directions not at 90°: Prismatic cleavage (Hornblende)
- 3 Directions at 90°: Cubic cleavage (Halite)
- 3 Directions not at 90°: Rhombohedral cleavage (Calcite)
- 4 Directions: Octahedral cleavage (Fluorite)
Crystal Habits
- General Forms and Combinations: Various shapes like acicular (needles), tetrahedral, pyramidal, cubic, bladed, dipyramidal, botryoidal, tabular, dipyramidal, prismatic, radial, fibrous, and scalenohedral are displayed.
- Detailed diagrams and descriptions of each crystal habit are shown.
Visual Guides for Habits
- Examples of dipyramidal and cubic habits are provided with images.
- Examples of bladed and tabular habits are shown with images.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Prepare for your upcoming Mineral Identification exam with this quiz focused on distinguishing cleavage versus fracture. Study the examples of different minerals and their specific cleavage types, along with an exploration of various crystal habits. This resource will help solidify your understanding of key mineral characteristics.
