| Home Page | Log In | Message Board | The Mindat Directory |
| Register | Search Pages | Chat Now! (2 online) | Mindat Auctions |
|
|
|
| |
|
Djebel Melah d'El Outaya, Massif de l'Aures, Biskra Province, Algeria Transparent to clear anhydrite xl with good terminations. Specimen size 35x26x7 mm. Rui Nunes specimen and photo. September 2008. |
| © Rui Nunes 2008 | Photo ID: 184993 View Count: 213 |
Arfvedsonite : [Na][Na2][Fe2+4Fe3+][(OH)2|Si8O22] | |
|
Ain Sefra, Saida Province, Algeria Black elongated crystal of arfvedsonite measuring 80 mm on sienitic matrix. Photo and collection Antonio Borrelli. |
| © Antonio Borrelli | Photo ID: 40782 View Count: 341 |
| |
|
Ahaggar Mts (Hoggar Mts), Tamanghasset Province, Algeria Translucent brown chalcedony. Specimen size 5.1 x 4.1 x 3.6 cm. See second image. Christian Bracke Collection. |
| © Christian Bracke | Photo ID: 162949 View Count: 254 |
Chalcedony | |
|
Ahaggar Mts (Hoggar Mts), Tamanghasset Province, Algeria FOV ~ 5.3 x 4 cm. |
| © Christian Bracke | Photo ID: 183504 View Count: 142 |
Dussertite : BaFe3+3[(OH)5|(AsO4)2] | |
|
Djebel Nador, Constantine Province, Algeria field of view 3mm |
| © Maurice de Graaf | Photo ID: 15858 View Count: 647 |
Dussertite : BaFe3+3[(OH)5|(AsO4)2] | |
|
Djebel Debar, Hamman, Meskhootine, Constantine Province, Algeria Dussertite crust from type locality Size 1,5 x 1,5 cm Collection and photo: M Arliguie |
| © M Arliguie | Photo ID: 92648 View Count: 201 |
Dussertite : BaFe3+3[(OH)5|(AsO4)2] | |
|
Djebel Debar, Hamman, Meskhootine, Constantine Province, Algeria Green crystals of Dussertite from the TL. Field of view 4 mm. Specimen and photo Leon Hupperichs. |
| © Leon Hupperichs | Photo ID: 111336 View Count: 149 |
Grossite : CaAl4O7, Forsterite : Mg2[SiO4], Perovskite : CaTiO3 | |
|
Tamanghasset Province, Algeria Scanning electron micrograph of a polished section showing inclusions of grossite (GR) in forsterite (FR) with perovskite (PV), in Acfer 214 meteorite, carbonaceous chondrodite-CH, found 1891, 27º41.40N, 04º22.32E, Tamenghest, Algeria. P029 40 micron field of view. Excalibur Mineral specimen. |
| © 2008, JGW | Photo ID: 155918 View Count: 165 |
Gypsum : Ca[SO4] · 2H2O | |
|
El Souf, Sahara Desert, El Oued Province, Algeria Big and beautiful gypsum cluster. The well formed and sharply edged crystals show a rough surface because of included sand grains. Single crystals about 13 cm. Specimen size: 29 x 17 x 13 cm. |
| © Christian Bracke | Photo ID: 54356 View Count: 520 |
Gypsum : Ca[SO4] · 2H2O | |
|
El Souf, Sahara Desert, El Oued Province, Algeria Big and beautiful gypsum crystals, well formed and sharply edged, showing a rough surface because of included sand grains. Specimen size: 15 x 8 x 4 cm. Photo: Christian Bracke, Collection: Michael Ebert |
| © Christian Bracke | Photo ID: 54459 View Count: 414 |
| Page 1 of 5 (1 to 10 of 43 total) | Next Page | |
| Page: 1 2 3 4 5 | ||
