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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Heulandite Subgroup from
Estacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA


03333020017371788723780.jpg
Heulandite Subgroup

Estacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA
08364580017272032909768.jpg
Heulandite Subgroup

Estacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA
03333020017371788723780.jpg
Heulandite Subgroup

Estacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA
08364580017272032909768.jpg
Heulandite Subgroup

Estacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA
03333020017371788723780.jpg
Heulandite Subgroup

Estacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA
09160100017272015686665.jpg
Heulandite Subgroup

Estacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA
Locality type:Occurrence
Classification
Species:'Heulandite Subgroup' (not an IMA approved species)
Formula:(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Pyrite1
Data
Mineral Data:Click here to view Heulandite Subgroup data
Locality Data:Click here to view Estacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:710231
Long-form Identifier:1:3:710231:8
GUID (UUID V4):0
Nearest other occurrences of Heulandite Subgroup
19.9km (12.3 miles) ⓘNisbet (Oregon Quicksilver), Oak Grove Fork, Clackamas County, Oregon, USA
36.0km (22.3 miles) ⓘSwim Warm Springs, Clackamas County, Oregon, USA
38.8km (24.1 miles) ⓘPucci drillhole, Hood River County, Oregon, USA
40.1km (24.9 miles) ⓘNew Era, Clackamas County, Oregon, USA
45.7km (28.4 miles) ⓘCTGH-1 well, Breitenbush-Austin Hot Springs area, Santiam Mining District (Elkhorn Mining District), Marion County, Oregon, USA
46.0km (28.6 miles) ⓘElk Rock Island, Milwaukie, Clackamas County, Oregon, USA
46.5km (28.9 miles) ⓘSE Lava Drive, Milwaukie, Clackamas County, Oregon, USA
49.7km (30.9 miles) ⓘCinnabar Occurrence, Breitenbush-Austin Hot Springs area, Santiam Mining District (Elkhorn Mining District), Marion County, Oregon, USA
51.4km (31.9 miles) ⓘSUNEDCO 58-28 well, Breitenbush-Austin Hot Springs area, Santiam Mining District (Elkhorn Mining District), Marion County, Oregon, USA
56.6km (35.2 miles) ⓘLivingston Quarry, Orchards, Clark County, Washington, USA
References
King, Van (n.d.) Personal communcation.
 
and/or  
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