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
SE Lava Drive, Milwaukie, Clackamas County, Oregon, USA


09746370017370388228238.jpg
Heulandite Subgroup, etc.

SE Lava Drive, Milwaukie, Clackamas County, Oregon, USA
01348140017272337456605.jpg
Heulandite Subgroup, etc.

SE Lava Drive, Milwaukie, Clackamas County, Oregon, USA
05934660017272046212132.jpg
Heulandite Subgroup, etc.

SE Lava Drive, Milwaukie, Clackamas County, Oregon, USA
01348140017272337456605.jpg
Heulandite Subgroup, etc.

SE Lava Drive, Milwaukie, Clackamas County, Oregon, USA
05934660017272046212132.jpg
Heulandite Subgroup, etc.

SE Lava Drive, Milwaukie, Clackamas County, Oregon, USA
01348140017272337456605.jpg
Heulandite Subgroup, etc.

SE Lava Drive, Milwaukie, Clackamas County, Oregon, USA
Locality type:Property
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:
Stilbite Subgroup2
Data
Mineral Data:Click here to view Heulandite Subgroup data
Locality Data:Click here to view SE Lava Drive, Milwaukie, Clackamas County, Oregon, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:975106
Long-form Identifier:1:3:975106:4
GUID (UUID V4):0
Nearest other occurrences of Heulandite Subgroup
1.3km (0.8 miles) ⓘElk Rock Island, Milwaukie, Clackamas County, Oregon, USA
16.4km (10.2 miles) ⓘNew Era, Clackamas County, Oregon, USA
31.5km (19.6 miles) ⓘLivingston Quarry, Orchards, Clark County, Washington, USA
36.2km (22.5 miles) ⓘLacamas Creek, Orchards, Clark County, Washington, USA
46.5km (28.9 miles) ⓘEstacada Pyrite locality, Clackamas River localities, Estacada, Clackamas County, Oregon, USA
52.3km (32.5 miles) ⓘBig Tree Creek, Yacolt, Clark County, Washington, USA
61.3km (38.1 miles) ⓘRock Creek, Stevenson, Skamania County, Washington, USA
64.3km (40.0 miles) ⓘRoadcuts, Kalama area, Cowlitz County, Washington, USA
65.5km (40.7 miles) ⓘGoble Quarry (Nicolai Quarry), Goble, Columbia County, Oregon, USA
66.3km (41.2 miles) ⓘNeer Road, Goble, Columbia County, Oregon, USA
References
(n.d.) Rudy Tschernich Zeolite Collection, Rice Museum.
 
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