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Christopher Wentzell's Photo Gallery

24Q-6V8Quartz (Var: Chalcedony), Chalcedony (Var: Jasper), Chalcedony (Var: Agate)

Rattlesnake Jasper Mine, Velvet District, Pershing Co., Nevada, USA

Dimensions: 4 inches x 3 inches x 1.75 inches

A brecciated jasp-agate from the Rattlesnake Deposit. Incorrectly called "Howardite" (note: Howardite is a type of Meteorite). This is just one of many types of the patterns and varieties of this material found here. Surface is wet to show what it would appear like when polished.
Copyright: © Christopher Wentzell      Photo ID: 916268     Uploaded by: Christopher Wentzell   View Count: 27   Approval status: Public galleries    Type: Photo - 1114 x 751 pixels (0.8 Mpix)

GR4-P17Quartz, Cuprite, Chrysocolla

Wedding Ring Mine, Disaster District, Montana Mts, Humboldt Co., Nevada, USA

Dimensions: 2.25 inches x 2.0 inches x 0.75 inches

A sample of massive white Quartz from the Wedding Ring Mine property showing secondary copper minerals, including Cuprite (Reddish-brown) and Chrysocolla (blue). Personally collected in 1994 with Leah Brashear and John M. "TC" Ford. Measures 2.25 x 2.0 x 0.75 inches.
Copyright: © Christopher Wentzell      Photo ID: 881976     Uploaded by: Christopher Wentzell   View Count: 45   Approval status: Public galleries    Type: Photo - 3302 x 3303 pixels (10.9 Mpix)

NNN-P46Fluorite, Quartz

Youxi Co., Sanming, Fujian, China

Dimensions: 5.8 cm x 5.8 cm x 4.6 cm

Light Green Fluorite crystals with minor Quartz Crystals from Youxi, Fujian Province, China; If I remember correctly these were called “Aztec pyramids” and were a find from 2015. Measures 5.8 x 5.8 x 4.6 cm.
Copyright: © Christopher Wentzell      Photo ID: 858519     Uploaded by: Christopher Wentzell   View Count: 50   Approval status: Public galleries    Type: Photo - 3194 x 3456 pixels (11.0 Mpix)

71T-6FTOpal, Precious Opal (Var: Black Opal), Opal (Var: Precious Opal), Opal

WRT Stonetree group, Virgin Valley, Humboldt Co., Nevada, USA

Field of View: 5 inches

A handful of Virgin Valley Opal, precious black opal variety. Virgin Valley Opal is known to be notoriously unstable for jewelry because it cracks or crazes, but it has some of the brightest colors of all opal types in the world, and is best suited for mineral specimens. Rarely, material will hold up as gems. Sometimes this material can take up to half a century to craze as demonstrated by the famous Roebling Opal in the Smithsonian Institution. These opals are from the WRT Stonetree / Dominion Opal Mines Group in Virgin Valley, owned by my father. FOV is about 5 inches across.
Copyright: © Christopher Wentzell      Photo ID: 856637     Uploaded by: Christopher Wentzell   View Count: 111   Approval status: Public galleries    Type: Photo - 1024 x 768 pixels (0.8 Mpix)

346-C95Fluorite, Muscovite

Multiple photos available
Chumar Bakhoor, Hunza Valley, Gilgit District, Gilgit-Baltistan, Pakistan

Dimensions: 5 inches x 4 inches x 3.75 inches

A large, clear gemmy Fluorite crystal with a slightly pink to rose red core zone, with one small embedded blade of Muscovite Mica. Depending on the type of lighting and orientation, the piece can glow pink or just show the color zoning (see child photos). 5 x 4 x 3.5 inches in max dimensions, and weighs over 3 pounds.
Copyright: © Wentzell Gem Trust      Photo ID: 846145     Uploaded by: Christopher Wentzell   View Count: 34   Approval status: Public galleries    Type: Photo - 3456 x 4033 pixels (13.9 Mpix)

EQQ-8FXQuartz, Tourmaline, Feldspar Group

Katerina Mine, Hiriart Mountain, Pala, Pala District, San Diego Co., California, USA

Dimensions: 12.2 cm

Quartz Crystal with micro blue tourmaline inclusions and feldspar, from the 1990 finds here, mined by Otto Komarek and Byron Weege. 12.2 cm high.
Copyright: © Christopher Wentzell      Photo ID: 838338     Uploaded by: Christopher Wentzell   View Count: 51   Approval status: Public galleries    Type: Photo - 2920 x 3456 pixels (10.1 Mpix)

WGF-P9AChalcedony (Var: Jasper), Quartz (Var: Chalcedony)

Tunnel Hill mine, Velvet District, Pershing Co., Nevada, USA

Dimensions: 6 inches x 4 inches x 1.75 inches

An unusual gem/lapidary material (improperly) called "Howardite" and also known as "Rattlesnake Jasper" from a "lost" locality in Nevada. Also confusingly referred to as "Rattlesnake Agate" "Snakeskin Agate" and "Plaid Agate." The correct locality is just S/SW of the old Tunnel Hill Diatomite Mine, Velvet District, Pershing Co., NV, rediscovered in 2016 and kept a secret for a period of time. Some more recent varieties include "Flamingo Agate" and "Royal Flamingo Agate." This material was said to be an opalized/agatized/jasperized tuff infused with chalcedony, in which the plaided or wood grain "appearance" was stated (1940's ?) to be created from the pulsation of iron bearing waters infiltrated through the tuff. Sinkankas (GNA, Vol.1, 1959) depicts similar material which he stated more closely resembled Chert. It has been mistaken as petrified wood in the past. I have not had any tests performed on the material, so can only go on what little I can find in the literature, which is scarce. It is a highly desirable material in the lapidary community.
Copyright: © Christopher Wentzell      Photo ID: 835766     Uploaded by: Christopher Wentzell   View Count: 158   Approval status: Public galleries    Type: Photo - 4752 x 3168 pixels (15.1 Mpix)

JUU-A38Fluorite, Dolomite

Dolomite Products Quarry, Penfield, Monroe Co., New York, USA

Dimensions: 5.1 cm
Largest Crystal Size: 2.6 cm

A nice light bluish-lavendar Fluorite crystal measuring 2.6 cm on longest edge, perched on limestone matrix with small Dolomite crystals, from Penfield Quarry. Measures 5.1 cm overall. Ex Steve Garza specimen.
Copyright: © Christopher Wentzell      Photo ID: 835510     Uploaded by: Christopher Wentzell   View Count: 47   Approval status: Public galleries    Type: Photo - 3152 x 3395 pixels (10.7 Mpix)

ARW-FRPElbaite, Quartz (Var: Smoky Quartz), Albite (Var: Cleavelandite)

Himalaya Mine, Gem Hill, Mesa Grande District, San Diego Co., California, USA

Dimensions: 3.88 inches x 2.5 inches x 1.75 inches

Nice Bicolored Tourmaline crystal on double-terminated Smoky Quartz, with minor cleavelandite spray on the tourmaline. From the Himalaya Mine. Overall measures 3 7/8 inches long by 2 1/2 inches and a depth of 1 3/4 inches tall. The tourmaline is 1 1/2 inches by 1/2 inch.
Copyright: © Christopher Wentzell      Photo ID: 835119     Uploaded by: Christopher Wentzell   View Count: 67   Approval status: Public galleries    Type: Photo - 3443 x 4529 pixels (15.6 Mpix)

W2T-568Elbaite, Quartz (Var: Smoky Quartz)

Himalaya Mine, Gem Hill, Mesa Grande District, San Diego Co., California, USA

Dimensions: 8.25 cm x 6.1 cm x 7.3 cm

Deep pink Elbaite Tourmaline crystals embedded in a Smoky Quartz Crystal from the Himalaya Mine at Mesa Grande, San Diego Co., California, shown resting in my hand. The specimen measures 8.25 cm long by 6.1 cm front to back by 7.3 cm tall. The largest tourmaline measures 5.4 cm tall by 1.5 cm wide.
Copyright: © Christopher Wentzell      Photo ID: 835116     Uploaded by: Christopher Wentzell   View Count: 79   Approval status: Public galleries    Type: Photo - 3339 x 3456 pixels (11.5 Mpix)
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