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Pyromorphites from Moulay Bouazza, Morocco
Pyromorphites from Bou Iboulkhir mine, by Tomasz Praszkier
INTRODUCTION DISCOVERY
Map of Earth with Morocco marked.
Map of Morocco with the Moulay Bouazza area marked.
View to the Moulay Bouazza from the mine. M. Oleszczuk photo.
GEOLOGY Mineralization in the Moulay Bouazza area is placed in Western Meseta, in Central Massif built mostly by Early Paleozoic and Carboniferous metamorphic and magmatic rocks. Mine is located very close to one of the Variscian shear zones and probably connected with intrusive rocks. In Bou Iboulkhir host rocks for the ore vein are metamorphic schists of Carbonifeous age. Main ore in the vein is galena which occurs as very coarse grains and bodies in gossan. Thickness of the vain on the surface is only about 30 cm, but it gets thicker (up to 50-70 cm) going down. Surficial part of the vein is weathered and galena occurs there in very porous gossans with many cavities and empty spaces. Most of the open spaces are filled with red clay, but some are very fresh and clean. Only in small percentage of the cavities well formed crystals of pyromorphite are present. Usually they occur as groups of crystals with good separation, surrounded by “empty” part of the cavity. There are two types of matrix – one is red-brown gossan and second are velvet black coatings of the ?Mn-Fe-Oxides (not analyzed yet). Obviously second type of matrix gives much better contrast.
Landscapes around the mining area with old mining buildings visible. J. Ko³odziejczyk photo.
Satelitar view of the mining area with the main ore vein marked.
Old working, mine`s buildings remains. J. Ko³odziejczyk photo.
Quarry on the main ore vein. M. Oleszczuk photo.
Entrance to the old tunnel. J. Praszkier photo.
Another entrance to the tunnel with the main ore marked. T. Praszkier photo.
Close-up of the vein, galena bodies in the gossan. J. Praszkier photo.
Porous gossans with a pocket containing green pyromorphite. T. Praszkier photo.
COLLECTING EXPEDITION In a few days several meters of the vein were mined to the depth of 2 meters. All extracted blocks of the vein were broken into smaller pieces in search of cavities. Because many cavities are filled with clay, the pyromorphite crystals are usually not well visible. For this reason all fragments of the vein with bigger pockets were taken to Poland to clean them and check their content. During the whole operation several hundreds of specimens were collected, mostly low or medium quality. A few higher quality pieces were also discovered.
Kitchen in our luxury rental house in Moulay Bouazza. J. Ko³odziejczyk photo.
Toilet on the left, shower on the right, our rental house in Moulay Bouazza. J. Ko³odziejczyk photo.
Preparation for the mining. M. Oleszczuk photo.
First research. T. Praszkier photo.
Mining in progress, the very beginning. J. Ko³odziejczyk photo.
Digging the vein in a scoarching sun. M. Oleszczuk photo.
Digging the vein in a scoarching sun. M. Oleszczuk photo.
Work in progress. J. Ko³odziejczyk photo.
Work in progress. J. Ko³odziejczyk photo.
Finally shadow in the evening, visible effects of a few days mining. J. Ko³odziejczyk photo.
Digging in the evening. M. Komorowski photo.
Digging in the evening. M. Komorowski photo.
Digging in the evening. M. Komorowski photo.
Digging in the evening. M. Komorowski photo.
Eventually we worked even in the night, a few meters of the vein was mined at the end. J. Praszkier photo.
We broke all the mined vein fragments into smaller pieces . J. Ko³odziejczyk photo.
Examining specimens after the first wash. J. Ko³odziejczyk photo.
Happy miner. J. Ko³odziejczyk photo.
It was not easy to see the crystals under a thick layer of red clay, this one is already after intensive first washing. J. Ko³odziejczyk photo.
One of the specimens after the first wash. J. Ko³odziejczyk photo.
One of the specimens after the first wash. J. Ko³odziejczyk photo.
MINERALS The only other minerals beside of pyromorphite occurring in pockets are rare and usually small crystals of cerussite formed as glossy, multiply twinned (snowflakes) crystals and white crusts of gypsum.
One of the better quality speicmens, size approx. 7 cm. J. Praszkier photo.
One of the better quality speicmens, size approx. 9 cm. J. Praszkier photo.
One of the better quality speicmens, size approx. 6 cm. J. Praszkier photo.
One of the better quality speicmens, FOV approx. 8 cm. J. Praszkier photo.
One of the better quality speicmens, size approx. 7 cm. J. Praszkier photo.
One of the better quality speicmens, size approx. 5 cm. J. Praszkier photo.
One of the better quality speicmens, size approx. 4 cm. J. Praszkier photo.
One of the better quality speicmens, size approx. 8 cm. J. Praszkier photo.
One of the better quality speicmens, size approx. 10 cm. J. Praszkier photo.
Close-up of the specimen pictured above. J. Praszkier photo.
One of the better quality speicmens, size approx. 6 cm. J. Praszkier photo.
One of the better quality speicmens, size approx. 9 cm. J. Praszkier photo.
Close-up of the specimen pictured above. J. Praszkier photo.
Close-up of the specimen pictured above. J. Praszkier photo.
One of the biggest crystals found in Moulay Bouazza, size approx. 2.5 cm. J. Praszkier photo.
One of the best pieces recovered in Moulay Bouazza, crystals up to 1.5 cm. J. Praszkier photo.
The best specimen collected in Moulay Bouazza in terms of color, it is more vivid in person. J. Praszkier photo.
Probably the best piece collected in Moulay Bouazza, crystals up to 2 cm. J. Praszkier photo.
Close-up of the specimen pictured above. J. Praszkier photo.
Night view to Moulay Bouazza from the mining area. J. Praszkier photo.
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