Meinrad Kempf's Photo Gallery

PGX-QDCSiderite FeCO₃ , Saponite Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂·nH₂O

Zeilberg Quarry, Maroldsweisach, Haßberge District, Lower Franconia, Bavaria, Germany

Field of View: 5.3 mm

Lenticular, brown translucent siderite on a bed of saponite, in parts accompanied by aragonite (see child photo).

Setup:
Sony Alpha 6000, bellows, Raynox 250, aperture, Nikon E-Plan 4x/0.10.

WKW-HD9Stellerite Ca₄(Si₂₈Al₈)O₇₂·28H₂O , Laumontite CaAl₂Si₄O₁₂·4H₂O

Oberbaumühle Quarry, Windischeschenbach, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany

Field of View: 4.5 mm

Yellow to orange coated Stellerite on Laumontite. There is some sort of zoning as a transparent layer encloses the colored core (see child photo).

Visual id.

Setup:
Sony Alpha 6000, bellows, Raynox 250, aperture, Nikon E-Plan 4x/0.10

JT0-MEGFluorite CaF₂ , Quartz SiO₂

Gottesehre Mine, Urberg, Dachsberg, Waldshut, Freiburg Region, Baden-Württemberg, Germany

Field of View: 5.5 mm

Fluorite and quartz covered by an unknown mineral showing shrinkage possibly due to dehydration.

KRY-X2VSulphur S₈

Gründenwald, St Ulrich, Bollschweil, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany

Field of View: 2.7 mm

Sulphur on altered berthierite. Specimen collected at the Kohlerhof.

Setup:
Sony Alpha 6000, bellows, Raynox 250, Optem M Plan Apo 10x; Helicon Focus

EPT-Y6RValentinite Sb₂O₃ , Sulphur S₈ , Metastibnite Sb₂S₃ , Berthierite FeSb₂S₄

Gründenwald, St Ulrich, Bollschweil, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany

Field of View: 3 mm

Yellowish stained Valentinite with small sulfur drops on Berthierite, partially altered to Metastibnite. Specimen collected at the Kohlerhof.

Setup:
Sony Alpha 6000, bellows, Raynox 250, Optem M Plan Apo 10x; Helicon Focus

8MN-0ANColoradoite HgTe , Gold Au

Bessie G Mine, La Plata Mining District, La Plata County, Colorado, USA

Field of View: 2.1 mm

Coloradoite cluster free grown in a quartz vug; associated with gold.

Setup:
Sony Alpha 6000, bellows, Raynox 250, Optem M Plan Apo 10x; Helicon Focus

33D-GDJChalcopyrite CuFeS₂

Derschlag, Gummersbach, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany

Field of View: 3.8 mm

Chalcopyrite on siderite/magnesite rhombs. The original label states "baryte" as matrix, which can be ruled out by optical means.

PPH-VNLAgardite-(Ce) CeCu₆(AsO₄)₃(OH)₆·3H₂O

Neubulach, Calw, Karlsruhe Region, Baden-Württemberg, Germany

Field of View: 3.3 mm

Spray of agardite on quartz. According to the label, the specimen is from the Hella Glück Stollen, now a visitor mine.

Setup:
Nikon D90, bellows, Raynox 250, Nikon E Plan 4x; Zerene Stacker.

XV3-MAYMalachite Cu₂(CO₃)(OH)₂ , Quartz (Var: Chalcedony) SiO₂

Virneberg Mine, Rheinbreitbach, Unkel, Neuwied, Rhineland-Palatinate, Germany

Field of View: 2.1 mm

Malachite on and beside chalcedony bars. Considering the 90° angles and parallel structures, it seems likely that these are pseudomorphs after cuprite (chalcotrichite).

Setup:
Sony Alpha 6000, bellows, Raynox 250, Optem M Plan Apo 10x; Helicon Focus.

TD2-Q4VDundasite PbAl₂(CO₃)₂(OH)₄·H₂O

Bastenberg Mine, Ramsbeck, Bestwig, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany

Field of View: 4.5 mm

Fibrous aggregates of dundasite with brown iron oxide coatings.

Setup:
Sony Alpha 6000, bellows, Raynox 250, Nikon E Plan 4x; Helicon Focus.