Sulphur Hole, Calico, Calico District, Calico Mts, San Bernardino County, California, USA
Golden-yellow to brown crusts of calciocopiapite, on matrix. Needs analysis for confirmation. 1.5 cm field of view. S055-23 Excalibur Mineral specimen.
© 2007, JGW
Clear to creamy white crystals. Field of view is 2 mm.
White halotrichite crystals on sandstone.
© Van King
White acicular halotrichite crystals on sandstone.
Light gray krausite crystals. Former Jaroslav Hyrsl collection. Rolf Luetcke specimen and photo.
Acicular white halotrichite crystals on sandstone.
Violet colored, platy quenstedtite crystals. Rolf Luetcke specimen and photo.
Violet colored, platy crystals of quenstedtite. Rolf Luetcke specimen and photo.
Brownish orange microcrystalline römerite with some yellow and white Fe sulfate minerals, possibly of the copiapite and halotrichite groups, respectively.
© Łukasz Kruszewski 2017
This material is from the first verified find of arsenate mineral at the Sulfur Hole by MarekC and Bob Housley. Collected from the side wall of the hydrothermal chimney directly above the hole during April 2019 MSSC post-fieldtrip to Borate area. Raman verified. Cellphone photo thru the eyepiece of the microscope.
© MarekC, 2019
Collected from the side wall of the hydrothermal chimney directly above the hole during April 2019 MSSC post-fieldtrip to Borate area. Raman verified. Cellphone photo thru the eyepiece of the microscope.
Sulphur crystals with sulphur stained "ramshorn" gypsum. From J. Donahue collection 5MP Chinese unbranded CMOS camera with bellows and FYSCOPE 4X Semi Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin.
© R. J. Martin
Yellow powdery masses of copiapite in a small glass bottle. Old material (1953), probably collected by Ralph Merrill. Purchased in 1982.
© Andrew Hodgson
Clearcreamy white of Krausite Photo with Canon Eos 600 D + Bellows + Rodenstock Rodagon 50 mm 1:4,0 reversed Photo and collection Giovanni Scapin
© Giovanni Scapin 2022
Gypsum on acid altered matrix. 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
Yellow copiapite Ex- Trevor Hoskings collection. 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
In 2019 the Sulfur Hole was completely covered by debris from the rock layers higher up. Looks more like a mound than a hole. However, some good sulfates have been found from the hydrothermal chimney directly above the hole location, including the first arsenate from the locality, scorodite.