Nicholas Guidi's Photo Gallery
UKR-8P0Vesuvianite Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Dimensions: 0.7 mm x 2 mm x 4 mm
Field of View: 1 cm
Largest Crystal Size: 4 mm
Weight: 50 g
Vesuvianite crystal with manganese dendrites
XVA-RECCalcite CaCO3
Dimensions: 15 cm x 10 cm x 3 cm
Field of View: 20 cm
Largest Crystal Size: 4 mm
Weight: 100 g
Secondary calcite crystallization on oxidized galena ore. Found in a pit near summit of mt baldy
0XQ-K76Galena PbS
Dimensions: 5 cm x 5 cm x 5 cm
Field of View: 5 mm
Largest Crystal Size: 6 mm
Weight: 100 g
Piece of quartz-metal ore from summit of mt. baldy, with little vug of galena crystals
QVU-R65Stilbite Subgroup M6-7[Al8-9Si27-28O72]·nH2O
Dimensions: 8 cm x 4 cm x 3 cm
Field of View: 8 cm
Largest Crystal Size: 5 mm
Weight: 100 g
Stilbite crystals (grayish crosshatching blades) on a calcite vein. The stilbite doesn’t clean up well.
VFM-50UStilbite Subgroup M6-7[Al8-9Si27-28O72]·nH2O
Dimensions: 1 feet x 1 feet x 1 feet
Field of View: 1 feet
Largest Crystal Size: 6 mm
Weight: 100 g
Calcite vein in Briones sandstone, with small dirty stilbite crystals
M7H-9XUChlorite Group
Dimensions: 1 feet x 1 feet x 1 feet
Field of View: 2 feet
Largest Crystal Size: 6 cm
Weight: 25 lb
The whole rock is made up of chlorite crystals (a chlorite schist?), the side showing is polished with stick crystals protruding randomly. These stick crystals could be some sub-type of chlorite crystals, or cited by Magnus Vonsen, could be rutile crystals embedded in chlorite.
WVF-MMLZoisite (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Dimensions: 1 m x 1 m x 1 m
Field of View: 1 m
Largest Crystal Size: 1 feet
Weight: 200 lb
Zoisite crystals said to be up to 1 foot here, cited from Magnus Vonsen, large and radiating. This rock was on the ground, fallen from the larger Sykes Rock. Best to leave the crystals as they are (hard to chip out).
6HE-0CYPyrite FeS2
Dimensions: 2 cm x 2 cm x 2 cm
Field of View: 6 cm
Largest Crystal Size: 2 cm
Weight: 50 g
Pyrite bleb in eclogite. Other sulfide blebs here too, like covellite
G5C-C2QLawsonite CaAl2(Si2O7)(OH)2·H2O , Epidote (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Dimensions: 4 cm x 4 cm x 4 cm
Field of View: 4 cm
Largest Crystal Size: 1 cm
Weight: 50 g
Lawsonite crystal with epidote or clinozoisite crytals. Found in big epidote/stilpomelane/lawsonite vein (or zone?) in larger eclogite boulder (sykes rock)
Info about formation: https://www.mindat.org/mesg-551604.html
K9Y-6Y0Vesuvianite Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 , Grossular Ca3Al2(SiO4)3
Dimensions: 1 cm x 1 cm x 1 cm
Field of View: 1 cm
Largest Crystal Size: 10 mm
Weight: 10 g
Twinned vesuvianite crystal with grossular.
