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LOCALITY IMAGES
GEOLOGY
Skarn Deposit, periphery of tonalite exposed on Vesper Peak (Squire Creek stock) - Oligocene (between 33.9 million to 23 million years before the present). The skarn deposit resulted from contact metasomatism of a limestone pod in Jurassic age sedimentary rock (predominately ribbon chert) adjacent to the tonalite intrusion.
This locality is under private claim, collecting is prohibited.
MINERALS (incomplete list) CLICK for COMPLETE LIST
| CaCO3 - Occurs as flattened white rhombohedral crystal. Quartz epimorphs after calcite have been found. | |
| Ca2Al3(SiO4)3(OH) - Occurs as gemmy honey-yellow prismatic crystals, some with parallel twinning. | |
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| (Ca,Fe,Mn)3Al2BO3Si4O12OH - |
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| Ca3Al2(SiO4)3 - Occurs as lustrous green to orange dodecahedral crystals with some crystals exhibiting cube faces. Crystals to over 2.5 cm have been found. |
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| CaFe2+(Si2O6) - Occurs as green to black crystals reported up to 8 cm in length (Cannon, 1991). Electron microprobe analyses completed by Cannon of Vesper Peak pyroxenes suggest all color varieties fall within the hedenbergite compositional range. |
| Ca2Al(AlSi3O10)(OH)2 - Occurs as light green to white clustered fan-like sheaths with individual crystals to about 4 cm. The prehnite is typically etched. | |
| CaTiSiO5 - One pocket contained loose gemmy honey-colored crystals to about 2 cm long. |
* photographed
HEDENBERGITE |
CLINOZOISITE Photo Copyright © Saul Krotki 2007 |
CLINOZOISITE, HEDENBERGITE, GROSSULAR garnet John Lindell Collection |
GROSSULAR garnet |
GROSSULAR garnet John Lindell Collection |
AXINITE on QUARTZ John Lindell Collection |
AXINITE with GROSSULAR garnet John Lindell Collection |
PREHNITE with HEDENBERGITE John Lindell Collection |
PREHNITE |
  QUARTZ epimorph after CALCITE John Lindell Collection |
GROSSULAR garnet on QUARTZ John Lindell Collection |
Gemmy TITANITE John Lindell Collection |
QUARTZ with Japan-law twin and GROSSULAR garnet John Lindell Collection |
Cannon, Bart, (November-December 1991) The Vesper Peak Garnet Deposit, Snohomish County, Washington. Rocks & Minerals. 66(06), 478-484.