Liberec District, Liberec Region, Czech Republic

Spotted slate - phyllite with spotted appearance is the result of growth of dark porphyroblasts due to the contact metamorphosis.

© Jakub Jirásek, 2024

Deatail agate as abstract picture. Photo was made in dark with long exposition. The sample was enlightened diagonally from the bottom. FOV 7mm. Spec polished.

© Vítězslav Snášel

Detail agate. FoV 7mm. Spec. polished.

© Vítězslav Snášel

Pink massive baryte from the dump of Křižany fluorite mine. Size 8×6 cm. Collection of author.

© Jakub Jirásek, 2009

Rare fluorite gemstone with silver mineral xanthoconite and silver, 1998. Collection and photograph Lukáš Jankaj.

Size spec. 65x55mm. Spec. polished.

© Vítězslav Snášel

Size spec. 130x60mm. Spec. polished. Short video https://www.youtube.com/shorts/4ws-MM4M5iU

© Vítězslav Snášel

Detail agate. FOV 7mm. Spec. polished.

© Vítězslav Snášel

Massive green fluorite, 2001. Collection and photograph Lukáš Jankaj.

Grey bismuth grain 12×3 mm altered to yellow bismutite in quartz vein. Sample 8×6 cm, collction of author.

© Jakub Jirásek, 2013

Perfect cassiterite crystal on quartz matrix. Collection of author.

© Jakub Jirásek, 2011

Short video https://www.youtube.com/shorts/4ws-MM4M5iU

© Vítězslav Snášel

Detail agate. FOV 5mm. Spec. polished.

© Vítězslav Snášel

Typical sample - tabular wolframite in quartz matrix. Size 8×5 cm. Collection of author.

© Jakub Jirásek, 2011

Black tourmalines up to 2,5 cm (most probably schorl) in quartz matrix. Collection of author.

© Jakub Jirásek, 2011

6x5 cm

© Albert Russ

Grains of apatite in quartz matrix. Size 6×5 cm. Collection of author.

© Jakub Jirásek, 2011

Size spec. 90x50mm. Spec. polished. Short video https://www.youtube.com/shorts/nh19BZflZxE

© Vítězslav Snášel

Nice and large agate from Rasovka - 9.7 x 4.8 x 4.5 cm, 335 grams. Photo/collection: Dawid Godziewski (www.agates.eu)

© www.agates.eu

Detail agate. FOV 5mm. Spec. polished.

© Vítězslav Snášel

In Coll. M. Slama Canon EOS 600D with Canon MP-E 65mm f/2.8 1-5x, stacked from 22 Images using Zerene Stacker (Pmax)

© Martin Slama

Tabular wolframite in quartz matrix. Size 10,5×9 cm. Collection of author.

© Jakub Jirásek, 2011

Dark orange crystal of chabazite, golden crystal of heulandite.

© Robert Vaňo

Typical sample - tabular wolframite in quartz matrix. Size 11×8 cm. Collection of author.

© Jakub Jirásek, 2011

Nice agate from Rasovka - 6.5 x 5.1 x 3.6 cm, 125 grams. Photo/collection: Dawid Godziewski (www.agates.eu)

© www.agates.eu

Size spec. 175x70mm. Spec. polished.

© Vítězslav Snášel

Detail agate. FoV 7mm. Spec. polished.

© Vítězslav Snášel

Nice group small crystals of analcime in cavity. Mineral was confirmed by PXRD and EMPA WDS.

© Robert Vaňo

© Robert Vaňo

Very small yellow crystal of titanite overgrown in rock. Mineral was confirmed by PXRD, Raman and EPMA WDS.

© Takehiro Touge

White radial aggregates of fibrous natrolite crystals. Mineral was confirmed by PXRD and EMPA WDS

Spotted slate - phyllite with spotted appearance is the result of growth of dark porphyroblasts due to the contact metamorphosis.

© Jakub Jirásek, 2024

Quarz vein with small vug and quartz crystal. Minor black tourmalines visible at the left side, near the contact with rhe wall-rock.

© Jakub Jirásek, 2019

Outcrop of phyllites with quartz vein with Sn-W mineralization. State of 2003.

© Jakub Jirásek, 2003

Outcrop of phyllites with quartz veins with Sn-W mineralization. State of 2003.

© Jakub Jirásek, 2003

Small occurence of quartz veins with Sn-W mineralization during building new road and new family houses near village Jeřmanice. 4/2010. Photo J. Čermák

© Jan Čermák

The “Steinbruch J. Lange & Söhne, Ruppersdorf” = Wagner quarry with quarry crew, on 11 November 1936. Vintage real photo postcard, photographer J. Lange, Ruppersdorf. The card was sent on 1 January 1901 from Müglitz to Schwarzau. G. Grundmann collection.

© J. Lange, Ruppersdorf.

The “Eisenwerk Friedland” steel works geral view, in 1900. Vintage picture postcard, photographer R. Pawliska, Friedeck. The card was sent on 26 July 1900 from Friedland to Olbersdorf, Bohemia. G- Grundmann collection.

© R. Pawliska, Friedeck.

The “Eisenwerk Friedland” steel works partial view (top right), and “Alte Hammmerschmiede in Althammer bei Friedland” hammer mill (top left), in 1899. Vintage picture postcard, photographer Rudolf Pawliska, Friedeck. The card was sent on 3 August 1899 from Friedland to Weissensee, Kärnten. G- Grundmann collection.

© Rudolf Pawliska, Friedeck.

The “Barbara Schacht Braunkohlenbergbau, Dönis-Görsdorf b. Grottau” mine general view, in 1912. Vintage picture postcard, photographer Alfred J. Schorr, Grottau. The card was sent on 31 March 1914 from Grottau to Reichenberg, Bohemia. G- Grundmann collection.

© Alfred J. Schorr, Grottau.