Ellensburg, Kittitas County, Washington, USA |
SiO2 - Occurs as agate in various colors, often banded. Ellensburg blue - blue variety, carnelian - red/orange variety, and white/grey agates can be found. Agate interiors are often botryoidal and/or are lined with crystalline quartz. Crystals range in size from drusy to about 2 cm. Crystalline quartz is clear to slightly amethyst. |
polished QUARTZ, var. blue chalcedony |
polished QUARTZ, var. banded blue chalcedony "Ellensburg blue" |
polished QUARTZ, botryoidal blue chalcedony "Ellensburg blue" |