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
Big Tree Creek, Yacolt, Clark County, Washington, USA


Locality type:Creek
Classification
Species:'Heulandite Subgroup' (not an IMA approved species)
Formula:(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Cowlesite12
Smectite Group10
Epistilbite9
Thomsonite-Ca7
Calcite5
Chabazite4
Mesolite3
Scolecite3
Mordenite3
Phillipsite Subgroup2
Gonnardite2
Garronite-Ca1
Data
Mineral Data:Click here to view Heulandite Subgroup data
Locality Data:Click here to view Big Tree Creek, Yacolt, Clark County, Washington, USA
Photo GalleryView Gallery (18 photos)
Data Identifiers
Mindat Occurrence Record ID:46508
Long-form Identifier:1:3:46508:5
GUID (UUID V4):0
Nearest other occurrences of Heulandite Subgroup
16.9km (10.5 miles) Lacamas Creek, Orchards, Clark County, Washington, USA
22.5km (14.0 miles) Livingston Quarry, Orchards, Clark County, Washington, USA
32.5km (20.2 miles) Rock Creek, Stevenson, Skamania County, Washington, USA
39.4km (24.5 miles) Baird Creek Quarry, Wolf Point, Cowlitz County, Washington, USA
40.2km (25.0 miles) Roadcuts, Kalama area, Cowlitz County, Washington, USA
41.1km (25.5 miles) 200 / 237 Road Quarry, Wolf Point, Cowlitz County, Washington, USA
43.2km (26.8 miles) Neer Road, Goble, Columbia County, Oregon, USA
43.2km (26.9 miles) Goble Quarry (Nicolai Quarry), Goble, Columbia County, Oregon, USA
43.5km (27.0 miles) Nelson Creek, Stevenson, Skamania County, Washington, USA
48.0km (29.8 miles) Signal Peak, Cowlitz County, Washington, USA
References
 
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