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Volker Betz's Photo Gallery

TLQ-RTTRoedderite KNaMg2(Mg3Si12)O30

04604090015778946608851.jpg
Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany

Field of View: 1.8 mm

Blue roedderite crystals in a haüyne like form from a find in the 1980´s. Photographed about 1989 from the collection of Alice and Eugen Rondorf as a pair of slides and converted to a digital crossed eyestereo picture. For today standards the picture is blurred an lacks of depth of field, as stacking was not possible in this time., but it well shows the benefits of stereo view pictures.

Betz, V. (1990) High Magnification Mineral Stereomacrography. Mineralogical Record, 21, 475-480
Copyright: © Volker Betz (1989, 2019)      Photo ID: 1021427     Uploaded by: Volker Betz   View Count: 47   Approval status: Public galleries    Type: Photo - 6661 x 4377 pixels (29.2 Mpix)

38P-4J5Quartz (Var: Rock Crystal) SiO2

00848830015778939857586.jpg
Switzerland

Field of View: 75 mm

Historical stereo picture of a rock crystal specimen converted to a crossed eye stereo picture. Published by G. Linico in 1907 as Stereoscope picture. Original size of the picture is 150 mm wide. Size of specimen and location is not given.


Linico, G. (1907) Das neue Leitz´ sche mineralogische Mikroskopmodell A. Neues Jahrb.. Miner. Geol. Pal.; XXIII. Beilageband, 163-168.
Photo ID: 1021426     Uploaded by: Volker Betz   View Count: 15   Approval status: Public galleries    Type: Photo - 2000 x 958 pixels (1.9 Mpix)

P75-DQKGobbinsite Na5(Si11Al5)O32·11H2O , Phillipsite

09590860015778077154519.jpg
Punta del Aguila, Playa Blanca, Yaiza, Lanzarote, Las Palmas Province, Canary Islands, Spain

Largest Crystal Size: 0.6 mm

Rare, well shaped gobbinsite interpenetration twin visible on a sphere of an fibrous gobbinsite/phillipsite-Na epitaxy. Phillipsite-Na is the minor constituent of this epitaxy. Most of this spheres show a phillipsite surface.
Copyright: © Volker Betz (2019)      Photo ID: 1021276     Uploaded by: Volker Betz   View Count: 24   Approval status: Public galleries    Type: Photo - 3456 x 3655 pixels (12.6 Mpix)

KGJ-CX3Natrolite Na2Al2Si3O10·2H2O

05546450015770297309720.jpg
Rauschermühle Quarry, Niederkirchen, Otterbach-Otterberg, City of Kaiserslautern, Rhineland-Palatinate, Germany

Field of View: 12 mm

A group of translucent natrolite crystals in crossed eye 3D view.
Copyright: © Volker Betz (2019)      Photo ID: 1019823     Uploaded by: Volker Betz   View Count: 36   Approval status: Public galleries    Type: Photo - 8551 x 2663 pixels (22.8 Mpix)

N2J-4YPGypsum (Var: Selenite) CaSO4·2H2O

04237610015766821868516.jpg
Dämmelwald clay pit, Wiesloch, Rhein-Neckar-Kreis, Karlsruhe, Baden-Württemberg, Germany

Dimensions: 28 mm x 15 mm x 5 mm

Two gypsum-twin crystals as group . Crossed-eye stereo picture.
Copyright: © Volker Betz (2019)      Photo ID: 1019149     Uploaded by: Volker Betz   View Count: 22   Approval status: Public galleries    Type: Photo - 5139 x 2910 pixels (15.0 Mpix)

7CH-NC0Natrolite Na2Al2Si3O10·2H2O

04884680015764118647214.jpg
Ölberg, Hundsangen, Westerwaldkreis, Rhineland-Palatinate, Germany

Dimensions: 27 mm x 20 mm x 10 mm

Cluster of natrolite crystals in crossed eye stereo view.
Copyright: © Volker Betz (2019)      Photo ID: 1018401     Uploaded by: Volker Betz   View Count: 59   Approval status: Public galleries    Type: Photo - 5282 x 2610 pixels (13.8 Mpix)

5RL-0VXAugite (CaxMgyFez)(Mgy1Fez1)Si2O6

04031090015763267775031.jpg
Erque, La Gomera, Santa Cruz de Tenerife Province, Canary Islands, Spain

Dimensions: 25 mm x 25 mm x 18 mm
Largest Crystal Size: 17 mm

Cluster of augite crystals in crossed eye stereo-view.
Copyright: © Volker Betz (2019)      Photo ID: 1018244     Uploaded by: Volker Betz   View Count: 128   Approval status: Public galleries    Type: Photo - 7776 x 3888 pixels (30.2 Mpix)

FKQ-CC5Zircon Zr(SiO4) , Fluorapatite Ca5(PO4)3F

09622580015761814633174.jpg
Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany

Field of View: 1.5 mm

Tree like aggregate of fibrous zircone crystals growing from a dark, rounded apatite crystal.
Copyright: © Volker Betz (2019)      Photo ID: 1017995     Uploaded by: Volker Betz   View Count: 55   Approval status: Public galleries    Type: Photo - 3054 x 3462 pixels (10.6 Mpix)

LU6-4WVNepheline Na3K(Al4Si4O16)

02310680015757257297387.jpg
Katzenbuckel, Eberbach, Rhein-Neckar-Kreis, Karlsruhe, Baden-Württemberg, Germany

Largest Crystal Size: 8 mm

1 mm thick polished cross section of a nepheline crystal, showing zonar structure and blue interference colours in polarized light (crossed nicols). Isollated from a boulder collected at the south slope of katzenbuckel.
Copyright: © Volker Betz (2019)      Photo ID: 1017288     Uploaded by: Volker Betz   View Count: 18   Approval status: Public galleries    Type: Photo - 5182 x 3886 pixels (20.1 Mpix)

9NV-75NPyroxene Group, Biotite K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2

05979470015757145085470.jpg
In den Dellen quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany

Largest Crystal Size: 3 mm

Tabular biotite crystal composed from many layers and partially covered with fine pyroxene fibers.
The orientation of the fibers indicate a possible epitaxy.
Copyright: © Volker Betz (2019)      Photo ID: 1017284     Uploaded by: Volker Betz   View Count: 60   Approval status: Public galleries    Type: Photo - 3886 x 5182 pixels (20.1 Mpix)
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