Carbonatite
White Carbonatite. Found on Southwest side of the main rock unit body on North side of Beaver Creek about 1/4 mi.
no date
Western Minerals Inc.
PH-5
Carbonatite
Light brown to almost off-white fine grained Carbonatite. Delicated Barite appears in very thin layers on one side of the rock.
no date
Western Minerals Inc.
PH-11
Carbonatite
Iron rich Carbonatite.
Western Minerals Inc.
PH-20
Chert
Chert sample found in a Carbonatite.
Hand Sample:
Pink to light brown chert sample that contains small (< 1 mm diameter) vesicles. Very thin quartz veins propagate through the sample in no preferred orientation.
no date
Western Minerals Inc.
PH-12
Gabbro
Coarse gabbro, extracted from the southern dike of two east-west dikes N of Deldardo Creek.
Hand Sample:
Evenly distributed dark, light, and white colored coarse-grained (1 mm) crystals. Obvious traces of oxidation from some metallic mineral on each surface of the rock.
no date
Western Minerals Inc.
PH-9
Gabbro
Dark gabbro dike separating ijolite and uncompahgrite
no date
Western Minerals Inc.
PH-18
Gneiss (Fenitized)
Fenitized Gneiss. Gneiss discovered in direct contact with pyroxenite in prospect trench on ridge, about 500 ft. west of PH-1.. .
no date
Western Minerals Inc.
PH-2
Ijolite
Recently exhumed ijolite from shallow bulldozer cut.
Hand Sample: Shows traces of iron oxidation in isolated areas. Small (> 0.5 mm in diameter) nodules, with the appearance of small sand grains appear in clusters on one face of the rock (not featured in hand sample image).
no date
Western Minerals Inc.
PH-6
Ijolite
Hand Sample:
Rock is comprised almost entirely K-Feldspar.
no date
Western Minerals Inc.
PH-17
Ilmenite.
Hand Sample:
Composed entirely of Ilmenite.
no date
Western Minerals Inc.
PH-7
Melilite-bearing rock
Hand Sample:
Large (1 cm-2 cm) dark grey to translucent quartz crystals comprise the matrix of the rock. Melilite minerals propagate consistently paralell to one another throughout the rock.
no date
Western Minerals Inc.
PH-14
Melilite-bearing rock
Hand Sample:
The rock is largely comprised of a very fine grained light green matrix with large (1 x 3 cm) black equant galena crystals. It's pretty magnificent.
no date
Western Minerals Inc.
PH-16
Nepheline syenite
Nepheline syenite that outcrops on west side of trail at about 9200 ft. on east side line of section.
no date
Western Minerals Inc.
PH-3
Nepheline syenite
Nepheline Syenite. Thin, dark vein runs through the center body of the rock.
no date
Western Minerals Inc.
PH-4
Porphyroblasic gneiss (Fenitized)
Fenitized porphyroblastic Gneiss.
Hand Sample:
Entirely coarse-grained rock except for 2 cm wide dark fine grained band. Obvious traces of oxidation appear on all sides, dominating the most weathered sides of the rock.
no date
Western Minerals Inc.
PH-10
Powderhorn Carbonatite Western Minerals Supplementary Materials
OCR PDF of supplemental information for the Powderhorn Carbonatite collection.
Western Minerals Inc.
Western Minerals Inc.
no date
PHsuite
Pyroxenite
Coarse pyroxenite, with traces of nepheline. This is the freshest pyroxenite that was found. It occurs near the nepheline syenite body in the eastern part of the complex.
Western Minerals Inc.
PH-1
Pyroxenite
Hand Sample:
Rock is comprised predominately of a dark fine grained matrix. Some specimens have minor amounts of pink K-feldspar. Clusters of biotite (~1 cm in diameter) appear on one face of the rock.
no date
Western Minerals Inc.
PH-8
Pyroxenite
Hand Sample:
Coarse grained pyroxenite showing heavy traces of oxidation on every weathered face of the rock. Large clusters (5-8 mm) of biotite appear throughout the rock.
no date
Western Minerals Inc.
PH-13
Pyroxenite
Hand Sample:
All weathered faces of the rock show heavy traces of oxidation.
no date
Western Minerals Inc.
PH-19