Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Opal from
Richardson Ranch, Madras, Jefferson County, Oregon, USA


02160030017272728673207.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
07499520017272019631633.jpg
Opal-AN

Richardson Ranch, Madras, Jefferson County, Oregon, USA
07158730017272019644750.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
05467780017272019659027.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
02160030017272728673207.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
07499520017272019631633.jpg
Opal-AN

Richardson Ranch, Madras, Jefferson County, Oregon, USA
07158730017272019644750.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
05467780017272019659027.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
02160030017272728673207.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
07499520017272019631633.jpg
Opal-AN

Richardson Ranch, Madras, Jefferson County, Oregon, USA
07158730017272019644750.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
05467780017272019659027.jpg
Opal-AN, etc.

Richardson Ranch, Madras, Jefferson County, Oregon, USA
Locality type:Ranch
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Thunder Egg6
Quartz5
- var Agate5
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Richardson Ranch, Madras, Jefferson County, Oregon, USA
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:354428
Long-form Identifier:1:3:354428:0
GUID (UUID V4):0
Nearest other occurrences of Opal
7.5km (4.7 miles) ⓘThunderegg Deposit, Pony Butte, Jefferson County, Oregon, USA
12.2km (7.6 miles) ⓘPolka Dot Agate mine, Jefferson County, Oregon, USA
24.5km (15.2 miles) ⓘRound Butte Cinder Pit, Jefferson County, Oregon, USA
46.9km (29.2 miles) ⓘBarnes Butte (Prineville Quicksilver), Howard Mining District (Ochoco Mining District; Bolivar Mining District), Crook County, Oregon, USA
56.2km (34.9 miles) ⓘJimmy Ann (Beardssmore; Stanley & Culbertson; Staley; Ochoco Mines Corp.; Ochoco Quicksilver Champion; Barney and Staley), Howard Mining District (Ochoco Mining District; Bolivar Mining District), Crook County, Oregon, USA
59.3km (36.8 miles) ⓘTygh Valley, Wasco County, Oregon, USA
66.1km (41.1 miles) ⓘMother Lode (American Almaden; Consolidated Quicksilver; Canyon Creek), Howard Mining District (Ochoco Mining District; Bolivar Mining District), Crook County, Oregon, USA
74.8km (46.4 miles) ⓘPost, Crook County, Oregon, USA
77.3km (48.1 miles) ⓘCinnabar Occurrence, Breitenbush-Austin Hot Springs area, Santiam Mining District (Elkhorn Mining District), Marion County, Oregon, USA
87.2km (54.2 miles) ⓘKiggins Mine, Oak Grove Fork, Clackamas County, Oregon, USA
References
Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc. 567pp.
 
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