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RM2439   Quartz

Boulemane area, Fès-Meknès, Morocco

Druse of quartz crystals, milky to hyaline at the tips, with a certain reddish hue. It comes from a Moroccan locality unknown in collections, located in the Boulemane area, north of Aouli. Formed in volcanic rocks.


Size: 8.2 x 7 x 5 cm.
Main crystal: 0.8 x 0.7 cm.
Found in 03/2020

Price: 35 €Buy
 

RM2437   Pyrolusite replacing manganite

Boulemane area, Fès-Meknès, Morocco

These 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

Boulemane area, Fès-Meknès, Morocco

These 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


Price: 30 €Reserved

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12 minutes to become available again.
 

RM2436   Pyrolusite replacing manganite

Boulemane area, Fès-Meknès, Morocco

These 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


Price: 35 €Reserved

ON HOLD. It's already in your cart.
12 minutes to become available again.
 

RM2435   Pyrolusite replacing manganite

Boulemane area, Fès-Meknès, Morocco

These 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

Boulemane area, Fès-Meknès, Morocco

These 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


 
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