Peter Andresen's Photo Gallery

128-591Heneuite CaMg₅(CO₃)(PO₄)₃(OH) , Althausite Mg₄(PO₄)₂(OH,O)(F,◻) , Raadeite Mg₇(PO₄)₂(OH)₈ , Phosphoellenbergerite (Mg,◻)₂Mg₁₂(PO₄,PO₃OH)₆(PO₃OH,CO₃)₂(OH)₆ , Chlorapatite Ca₅(PO₄)₃Cl

Tingelstadtjern Quarry, Modum, Buskerud, Norway

Dimensions: 7.5 cm x 5 cm x 3 cm

Heneuite is the main mass of the sample, occurring as pale bluish green to brown-violet colored mass with a distinct cleavage (010), separated from yellow chlorapatite by a rim of a mixture of althausite, raadeite, magnesite and chlorapatite. Phosphoellenbergerite occurs as blue grains in heneuite close to the rim. Minerals are identified visually based on the description of raadeite in the type article (Chopin et al. 2001).

The main pegmatite quarry

Krigen Mica Quarry, Ualand, Lund, Rogaland, Norway

The main quarry showing most of the exposed part of the pegmatite.

Johs Nilsen Quarry, January 2017

Johs Nilsens Quarry, Tvedalen, Larvik, Vestfold, Norway

Johs Nilsen Quarry 14. January 2017. The levels are numbred with 1 at the top, making the present lowest level no. 7. The western part of the quarry (to left in picture) is very rich in pegmatites, and in August 2016 lots of rare and nice minerals was found on level 6, on this side of the quarry.

Y1J-TRQEudidymite Na₂Be₂Si₆O₁₅·H₂O , Epididymite Na₂Be₂Si₆O₁₅·H₂O , Helvine Be₃Mn²⁺₄(SiO₄)₃S , Analcime Na(AlSi₂O₆)·H₂O

Johs Nilsens Quarry, Tvedalen, Larvik, Vestfold, Norway

Field of View: 12 mm

A 5 mm star shaped aggregate of very pale pinkish eudidymite, sprinkled with tiny white epididymite crystals and two orange-yellow helvine crystals in front, all sitting on analcime crystals. Collected 20. August 2016 by the photographer.

72L-034Hansesmarkite Ca₂Mn₂Nb₆O₁₉·20H₂O , Peterandresenite Mn₄Nb₆O₁₉·14H₂O

A/S Granit Quarry, Tuften, Tvedalen, Larvik, Vestfold, Norway

Dimensions: 9.5 cm x 5.5 cm x 2 cm

Tiny, yellow hansesmarkite crystals with larger darker orange peterandresenite crystals on a fracture covered in white gonnardite. The hansesmarkite and peterandresenite are crystallized from drying-out waterdrops that have been runing through the fracture, enriched in niob from altered pyrochlores and manganese and calsium from Mn/Ca-carbonates. Sample collected the 7. November 2010.

16X-FGCSphaerobertrandite Be₃(SiO₄)(OH)₂

Johs Nilsens Quarry, Tvedalen, Larvik, Vestfold, Norway

Dimensions: 4 cm x 3 cm x 2.5 cm

Tiny cream coloured sphaerobertrandite aggregates completly covering aegirine needles in a vug in matrix.

Collected by Jens Andreas and Tordis Larsen in June 2014. Gift from Jens Andreas to me. Thank you Jens Andreas!

58A-A3CLorenzenite Na₂Ti₂(Si₂O₆)O₃ , Pyrophanite Mn²⁺TiO₃

Lysebo roadcut, Lysebo, Hedrum, Larvik, Vestfold, Norway

Field of View: 28 mm

Pale brown lorenzenite replacing grey/black metallic pyrophanite.

H7E-HQGScapolite

Arendal, Agder, Norway

Dimensions: 6 cm x 5 cm x 2.5 cm
Largest Crystal Size: 3.5 cm

Unusual sharp terminated scapolite crystals. Old sample with Krantz label.

LW1-GT9Rutile TiO₂

Ødegården apatite mines, Bamble, Telemark, Norway

Dimensions: 18 mm x 12 mm x 9 mm

Twinned crystal. Old sample originating from K. S. Mineralien - Niederlage zu Freiberg.

V1L-8FMFeldspar Group (Var: Sunstone)

Gjerdemyra, Sannidal, Kragerø, Telemark, Norway

Dimensions: 5 cm x 3.5 cm x 2 cm

Feldspar variety "Sunstone" from "Riksveg 38" roadcut. Collected by Harry Andersen, now in the collection of the photographer.