SOURCES:1. Earth Materials Hefferanhttps://www.facebook.com/groups/cienciadelatierra.delmuseoalaula/313619002155456/https://attachment.fbsbx.com/file_download.php?id=816352385052683&eid=ASuoLTovlsIIhpFG-friKZe5AlN6Vgslaz4dof5HuF32I32NIzBn9SY5JDQ-Iy60QyA&inline=1&ext=1440165546&hash=ASvceBIF167gCeqG2. A Practical Introduction to Optical Mineralogyhttps://www.facebook.com/groups/cienciadelatierra.delmuseoalaula/325147081002648/https://attachment.fbsbx.com/file_download.php?id=1530804677178821&eid=ASv5KSDQQxNuX8IakBfLEaAw_QUMdsp-ncEixPDwlfB92YR_veZZRRSdymnvYoJZGfig&inline=1&ext=1440166008&hash=ASvCV_wLAa5ExtGF3. Elements of Optical Mineralogyhttps://www.facebook.com/groups/EE.Uoh/720855444702818/https://attachment.fbsbx.com/file_download.php?id=1609492165938457&eid=ASsd4ot29rEQslrvlI1bZ0Cd0YHVtFTrUes3XjHy4O2nadm3xtL8RxQZ9ZZQ_W5nyRU&inline=1&ext=1440165939&hash=ASt-PTq4yuB2_mHu4. Atlas of Rock Forming Minerals in thin sectionhttps://www.facebook.com/groups/111142075681872/366176790178398/5. Earth Structure: An intro to structural geol and tectonicshttps://www.dropbox.com/s/jygi55uax65cip4/Earth%20Structure%20-%20An%20Introduction%20to%20Structural%20Geology%20and%20.pdf6 Lab Manualhttp://www.minsocam.org/msa/openaccess_publications/McNamee_Gunter_Lab_Manual.pdf7/ Understanding Earthhttps://www.dropbox.com/s/9mcbae8xkejkwwp/Understanding%20Earth-%20Grotzinger.pdf