Peter Andresen's Gallery

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Actinolite : ☐Ca2(Mg,Fe2+)5(Si8O22)(OH)2
	Selåsvatn, Vegårdshei (Vegårshei), Aust-Agder, Norway Fibrous actinolite on matrix. Sample is 11,5cm high and 6cm wide at the widest. Collection of the photographer.
© Peter Andresen	Photo ID: 155053    View Count: 113
Aegirine : NaFe3+[Si2O6]
	Kjeøya, Barkevik, Langesundsfjorden, Larvik, Vestfold, Norway Aegirine crystal in a pegmatite, about 20 cm long. 3. May 2008.
© Peter Andresen	Photo ID: 164324    View Count: 200
Anatase : TiO2, Quartz : SiO2
	Matskorhæ (Matskorhae), Ullensvang Statsallmenning, Hardangervidda National Park, Ullensvang, Hordaland, Norway Perhaps the two best anatase samples in the world? The photo is so poor, compared to how these two samples are in real life, standing in the mineral collection in the Geological Museum of Oslo. The largest sample to the right is about 50 cm lomg! Both have several hundred anatases to almost 1 cm on nice rock crystals. Both samples are from ...
© Peter Andresen	Photo ID: 138470    View Count: 277
Apatite-(CaF) : Ca5[F|(PO4)3]
	Bue, Bjerkreim, Rogaland, Norway Rounded apatite crystals to 1,5 mm in calcite matrix. FOV ca 2 x 1,4 mm. Photo scanned from diapositive, taken with a OM2 camera with phototube on a Olympus VMF2x stereoscope. Collected and in the collection of the photographer.
© Peter Andresen	Photo ID: 160134    View Count: 38
Aragonite : CaCO3
	Ehrlich (Erlich) Mine, Konnerudkollen (Grubeåsen) Mines, Konnerud, Drammen, Buskerud, Norway Aragonite crystals to about 1 mm. Specimen found by Øyvind Juul Nilsen. In the collection of the photographer.
© Peter Andresen	Photo ID: 157914    View Count: 28
Astrophyllite : (K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7, Annite : KFe2+3[(OH)2|AlSi3O10]
	Teineholmen, Barkevik, Langesundsfjorden, Larvik, Vestfold, Norway Golden brown astrophyllite crystals in black annite from Teineholmen. Size of sample is 4 cm x 2,75 cm x 0,5 cm. Collected by the photographer the 3. May 2008. Picture is achieved with scanner and not by photograph.
© Peter Andresen	Photo ID: 164320    View Count: 156
Aurichalcite : (Zn,Cu)5[(OH)3|CO3]2
	Konnerudkollen (Grubeåsen) Mines, Konnerud, Drammen, Buskerud, Norway Aurichalcite aggregate about 1,5 mm on matrix. Picture taken with an Olumpus OM2, on Olympus scope VMF 2x. Using a yellow lightbulb with blue filter. 35 mm positive film scanned. Collected and in the collection of the photographer.
© Peter Andresen	Photo ID: 157881    View Count: 34
Bismuthinite : Bi2S3, Bismutite : (BiO)2CO3, Malachite : Cu2[(OH)2|CO3]
	Gjellebekk Mine, Gjellebekk, Lierskogen, Lier, Buskerud, Norway Needles of bismuthinite about 1,5mm long, partly altered to bismutite, with malachite spheres growing on it. Collected and photo (scanned positive) by Peter Andresen.
© Peter Andresen	Photo ID: 92388    View Count: 99
Bismutite : (BiO)2CO3, Bismuthinite : Bi2S3
	Damåsen mine, Stordammen, Konnerud, Drammen, Buskerud, Norway Bismutite coating bismuthinite in galena/sphalerite ore. FOV about 1,5 mm x 1, 2 mm. Collected and in the collection of the photographer.
© Peter Andresen	Photo ID: 157886    View Count: 28
Brookite : TiO2
	Tysse, Odda, Hordaland, Norway Brookite crystals from Nibbenut, Hardangervidda. Crystal to left is 8 mm high, 6 mm wide and 1 mm at the thickest. Images is scanned with flatbed scanner, and positive film modus. In collection of Peter Andresen, scanned 22 March 2008.
© Peter Andresen	Photo ID: 157788    View Count: 36

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