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Question:

peterleader
peterleader
Student
High School - 11th Grade

Which of the following is not a member of the granite family? Halite, rhyolite, obsidian or pumice?

This is from my Earth Science book....

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Posted by peterleader on Tuesday January 20, 2009 at 6:14 PM and tagged with earth science, geology.

Answers:

  1. giorgiana1976
    giorgiana1976 Teacher
    Doctorate

    eNotes Editor

    Rhyolite is a member of granite family, being an igneous, extrusive rock.

    Pumice, is a vesicular rhyolite and is the result of an explosive erruption, when  two simultaneous actions happen, rapid cooling and depressurization. 

    Obsidian is also a rhyolite, and is a result of a rapid cooling process.

    Halite - rock salt, not a member of the granite family.

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    Posted by giorgiana1976 on Wednesday January 21, 2009 at 3:11 AM