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Shcherbinaite  zweiter Schlackenkegel, nördlicher Bruch, Große Spalteneruption, Tolbachik Vulkan, Kamchatka Oblast', Russland Taille=6 mm Copyright Pavel Kartashov

Shcherbinaite zweiter Schlackenkegel, nördlicher Bruch, Große Spalteneruption, Tolbachik Vulkan, Kamchatka Oblast', Russland Taille=6 mm Copyright Pavel Kartashov

Mottramite and Calcite - Tsumeb, Otjikoto Region, Namibia.

Mottramite and Calcite - Tsumeb, Otjikoto Region, Namibia.

Mysterious Prague Charles Bridge ~ Prague

bluepueblo: Through the Fog, Prague, Czech Republic photo via Jose, walking over this magnificent bridge is magical, imaginging it's history.love Czech Republic and prague.

Ankangite, Ba(Ti,V3+,Cr)8O 16, Stazzema, Lucca Province, Tuscany, Italy. Pair of well-formed prismatic ankangite crystals on clear barite matrix with quartz crystals

Pair of well-formed prismatic ankangite crystals on clear barite matrix with quartz crystals

Maghrebite. Aghbar open pit, Aghbar, Bou Azer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Maroc Taille=0.8 mm Collection et photo Georges Favreau

Maghrebite. Aghbar open pit, Aghbar, Bou Azer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Maroc Taille=0.8 mm Collection et photo Georges Favreau

Gerdtremmelite, (Zn,Fe)(Al,Fe)2(AsO4)(OH) 5, Tsumeb, Namibia. Spherical aggregrates of tabular brown crystals with white pyrophyllite on scorodite

Spherical aggregrates of tabular brown crystals with white pyrophyllite on scorodite. This is a portion of the type sample

Srebrodolskite, Ca2Fe+++2O5,   Kopeisk, South Ural, Russia. Dark brown grains, massive, associated with calcite

Srebrodolskite, Ca2Fe+++2O5, Kopeisk, South Ural, Russia. Dark brown grains, massive, associated with calcite

Micro-Universe: Life on a branch

Did you know that lichen can be a sign of good air quality? Small areas with many types of lichen have especially good quality air. Photo: Lichen courtesy of Jim McCulloch/Creative Commons.

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