Jun 28th, 2015
Studypool Tutor
Price: $10 USD

Tutor description

1. pyroxenes; Single-chain Silicates 2. orthorhombic (+,-) 3. Relief - moderate 4. Colour - colourles, very wekly coloured green/pink 5. RI - 1.658-1.788 6. Birefringence - 0.008-0.020 7. Interference colours - 2rd order 8. Extinction - straight, complete

Word Count: 114
Showing Page: 1/6
Orthopyroxenepyroxenes; Single-chain Silicatesorthorhombic (+,-)Relief - moderateColour - colourles, very wekly coloured green/pinkRI - 1.658-1.788Birefringence - 0.008-0.020Interference colours - 2rd orderExtinction - straight, completeCommentseuhedral basal section of orthopyroxenePPLbasaltEuhedral, acicular crystals of orthopyroxenePPLbasaltsubhedral glomerocryst of orthopyroxenePPLbasalteuhedral, elongate phenocryst of orthopyroxene, seen in PPL (left) and XPL (right)basaltExsolution Texturesorthopyroxene host with blebs of clinopyroxene in PPL (left) and XPL (right). Note the different extinction positions of the two phasesThe crystal above seen in XPL, and rotated so that the orthopyroxene is in (straight) extinction, whilst the clibnopyroxene, with inclined extinction is fully illuminated

Review from student

Studypool Student
" Thank you, Thank you, for top quality work, this is your guy!! "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1819 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors