Rosell Minerales
RM2922 Prehnite and actinolite
Ait Karmosse, Boulemane, Fès-Meknès, MoroccoThese prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.
Size: 8.9 x 6.6 x 5.2 cm.
Found in 02/2022.
RM2921 Prehnite
Ait Karmosse, Boulemane, Fès-Meknès, MoroccoThese prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.
Size: 9.2 x 5.8 x 4.5 cm.
Found in 02/2022.
RM2919 Prehnite and actinolite
Ait Karmosse, Boulemane, Fès-Meknès, MoroccoThese prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.
Size: 7.3 x 5.5 x 4.7 cm.
Found in 02/2022.
RM2437 Pyrolusite replacing manganite
Azlag, Boulemane, Fès-Meknès, MoroccoThese specimens of manganite partially replaced pyrolusite, come from a locality not yet described in the mineralogical bibliography. This deposit is located in the province of Boulemane, in the Fez-Meknés region, about ten kilometers from the well-known Aouli mines. It is a formation very similar to that of Imini (near Ouarzazate). These manganese deposits, both in Imini and in the Boulemane area, were formed in a karst system. Associated with shallow marine dolomites of the Cretaceous age and that currently form sub-horizontal mantles cutted by erosion, overlaping areas of volcanic rocks. Manganese minerals are found in dolomite breccia and ferruginous clays. We have carried out X-ray diffraction studies showing us the presence of both species: manganite and pyrolusite.
Size: 7.8 x 4 x 2.5 cm.
Main crystal: 3 cm.
Found in 03/2020
Analyzed specimen with report

RM2438 Pyrolusite replacing manganite
Azlag, Boulemane, Fès-Meknès, MoroccoThese specimens of manganite partially replaced pyrolusite, come from a locality not yet described in the mineralogical bibliography. This deposit is located in the province of Boulemane, in the Fez-Meknés region, about ten kilometers from the well-known Aouli mines. It is a formation very similar to that of Imini (near Ouarzazate). These manganese deposits, both in Imini and in the Boulemane area, were formed in a karst system. Associated with shallow marine dolomites of the Cretaceous age and that currently form sub-horizontal mantles cutted by erosion, overlaping areas of volcanic rocks. Manganese minerals are found in dolomite breccia and ferruginous clays. We have carried out X-ray diffraction studies showing us the presence of both species: manganite and pyrolusite.
Size: 6.3 x 2.5 x 2.4 cm.
Main crystal: 1.2 cm.
Found in 03/2020
Analyzed specimen with report

RM2436 Pyrolusite replacing manganite
Azlag, Boulemane, Fès-Meknès, MoroccoThese specimens of manganite partially replaced pyrolusite, come from a locality not yet described in the mineralogical bibliography. This deposit is located in the province of Boulemane, in the Fez-Meknés region, about ten kilometers from the well-known Aouli mines. It is a formation very similar to that of Imini (near Ouarzazate). These manganese deposits, both in Imini and in the Boulemane area, were formed in a karst system. Associated with shallow marine dolomites of the Cretaceous age and that currently form sub-horizontal mantles cutted by erosion, overlaping areas of volcanic rocks. Manganese minerals are found in dolomite breccia and ferruginous clays. We have carried out X-ray diffraction studies showing us the presence of both species: manganite and pyrolusite.
Size: 7 x 4 x 3 cm.
Main crystal: 1.8 cm.
Found in 03/2020
Analyzed specimen with report

RM2435 Pyrolusite replacing manganite
Azlag, Boulemane, Fès-Meknès, MoroccoThese specimens of manganite partially replaced pyrolusite, come from a locality not yet described in the mineralogical bibliography. This deposit is located in the province of Boulemane, in the Fez-Meknés region, about ten kilometers from the well-known Aouli mines. It is a formation very similar to that of Imini (near Ouarzazate). These manganese deposits, both in Imini and in the Boulemane area, were formed in a karst system. Associated with shallow marine dolomites of the Cretaceous age and that currently form sub-horizontal mantles cutted by erosion, overlaping areas of volcanic rocks. Manganese minerals are found in dolomite breccia and ferruginous clays. We have carried out X-ray diffraction studies showing us the presence of both species: manganite and pyrolusite.
Size: 8.4 x 5 x 3.5 cm.
Main crystal: 3.3 cm.
Found in 03/2020
Analyzed specimen with report

RM2434 Pyrolusite replacing manganite
Azlag, Boulemane, Fès-Meknès, MoroccoThese specimens of manganite partially replaced pyrolusite, come from a locality not yet described in the mineralogical bibliography. This deposit is located in the province of Boulemane, in the Fez-Meknés region, about ten kilometers from the well-known Aouli mines. It is a formation very similar to that of Imini (near Ouarzazate). These manganese deposits, both in Imini and in the Boulemane area, were formed in a karst system. Associated with shallow marine dolomites of the Cretaceous age and that currently form sub-horizontal mantles cutted by erosion, overlaping areas of volcanic rocks. Manganese minerals are found in dolomite breccia and ferruginous clays. We have carried out X-ray diffraction studies showing us the presence of both species: manganite and pyrolusite.
Size: 5.3 x 4.5 x 2.7 cm.
Main crystal: 1.5 cm.
Found in 03/2020
Analyzed specimen with report

RM2268 Azurite
Sidi Ayed, Boulemane, MoroccoSpecimen of azurite with a very special, intense color, formed by numerous small crystals, very brilliant. On baryte matrix. They belong to the mine that exploits the immense Marabout vein, located in the north of Sidi Ayed. The coordinates of the mine are 32°53'23''N, 4°38'33''W. Near from Mibladen but in the other side of the mountains.
Size: 6.5 x 3.5 x 3 cm.
Found in 02/2018.
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