1. Use this instead of Fig. 5.9 of the textbook
Dome-Yosemite_National_Park_California.html

2. Fig of textbook

3. HAWAI‘I ROCKS
(and minerals)

4. Oceanite (from Mauna Loa) – a basalt with >40% mafic phenocrysts, and all the
phenocrysts are olivine.
olivine

5. Ankaramite (from Hualālai) – a basalt with >40% mafic phenocrysts, and those
phenocrysts consist of olivine and pyroxene
olivine
pyroxene

6. Pyroxene crystals, weathered out of ankaramite lavas, East Maui SW rift zone

7. Outer, weathered surface of ankaramite from Rarotonga, Cook Islands
pyroxene

8. Freshly broken surface of ankaramite from Rarotonga, Cook Islands
pyroxene
olivine
amygdule
(former vesicle, now
filled with some sort
of secondary mineral)

9. Vesicular basalt (from Kohala) with lots of little clusters of plagioclase feldspar
phenocrysts (and a few olivine phenocrysts).
plagioclase feldspar
olivine
vesicle
(frozen bubble)

10. Very fine-grained (almost glassy) basalt, from Wai‘anae

11. VIDEOS OF SUPER-COOLED WATER

12. Gabbro (from Wailau, Moloka‘i)
plagioclase feldspar
pyroxene

13. plagioclase feldspar
quartz
potassium feldspar
biotite, or maybe hornblende
Granite (from Mojave desert, California)

14. Obsidian, from near Mono Lake, California

15. Pumice from Pu‘u Wa‘awa‘a, Hualālai

16. Calcareous sandstone (from near Ko Olina, O‘ahu)

17. Fragment of pāhoehoe lava showing the rapidly-chilled (and therefore glassy) outer
surface, and the more slowly-cooled (and therefore crystalline) interior