Avarela No. 2 quarry, Santa Maria e São Pedro e Sobral da Lagoa, Óbidos, Leiria, Portugal
Pyrite iron cross twin. Rui Nunes' specimen and photo taken in 2006.
© Rui Nunes 2006
Pyritohedral twin, cristals with 18mm
Perfect pyrite iron cross twin. Rui Nunes' specimen and photo, October 2010.
© Rui Nunes 2010
Iron cross pyrite twin. Rui Nunes' specimen and photo taken in 2008.
© Rui Nunes 2008
Pyritohedral twin, cristals with 10mm
Pyrite Iron cross twin. Vasco Trancoso collection and photo. Size: 6mm.
Pyrite iron cross twin. Rui Nunes' specimen and photo.
Pyrite Iron cross twin. Vasco Trancoso collection and photo. Size: 1 X 1 X 1cm.
There are two pyrite "Iron Cross" twins embedded in the matrix. Collection and photo Rui Nunes, June 2014.
© Rui Nunes 2014
Twinned pyrite crystals on the matrix. Rui Nunes' photo, June 2014.
Pyrite iron cross twin on matrix. Rui Nunes' specimen and photo, September 2019.
© Rui Nunes 2019
Pyrite iron cross twin on matrix. Rui Nunes' specimen and photo, May 2008.
Pyrite iron cross twin on matrix. Rui Nunes' specimen and photo taken in 2006.
Pyrite Iron cross twins. Vasco Trancoso collection and photo. Size: Crystals up to 8mm.
Pyrite iron-cross twin. Rui Nunes' specimen and photo, October 2008.
Pyrite iron cross twin. Rui Nunes' specimen and photo taken in 2011.
© Rui Nunes 2011
Pyrite iron cross twinned. Collection and photo Rui Nunes, June 2014.
Twinned pyrite crystals on matrix. Collection and photo Rui Nunes, February 2024.
© Rui Nunes 2012
Twinned pyrite crystals. Rui Nunes' specimen and photo, February 2012.
Pyrite Iron cross twins. Vasco Trancoso collection and photo. Size: Crystals up to 1 X 1,1 X 1cm.
Pyrite iron cross twin. Rui Nunes, specimen and photo, 2011.
Pyrite crystal embbeded in the matrix. Rui Nunes' specimen and photo, July 2011.
One more undamaged and beautiful pyrite "iron cross" twin found in a recent visit to Óbidos. Collection and photo Rui Nunes, August 2015.
© Rui Nunes 2015
Pyrite iron cross twin on matrix. Collection and photo Rui Nunes, December 2013.
© Rui Nunes 2013
Twinned pyrite crystals on matrix. Collection and photo Rui Nunes, December 2012.
A pyrite iron cross twin in the matrix. Collection and photo Rui Nunes, June 2014.
A beautiful pyrite crystal ambedded in the matrix. Rui Nunes' specimen and photo, May 2018.
© Rui Nunes 2018
Pyrite crystal with a red brown patina on matrix. Collection and photo Rui Nunes, June 2015.
Crystallized sample on top - Overall size 5,5x4x4cm - Self-collected in May of 2003
© Photo & Collection of Martins da Pedra
Specularite crystals up to 2mm on gypsum - Overall size 4x3x2cm - Self-collected in May of 2003
Dolomite crystals on matrix. Rui Nunes' specimen and photo, 2006.
Hematite on gypsum. Rui Nunes' specimen and photo, 2006.
Rui Nunes' specimen and photo, 2006.
Specularite crystals up to 2mm with Quartz crystals on gypsum - Field with 4x3cm - Self-collected in May of 2003
Sample crystallized with 4x8x8cm - November of 2004
Small smoky quartz crystals on matrix. Rui Nunes' specimen and photo, January 2008.
Rui Nunes' specimen and photo taken in 2006.
Selenite slabs were once very common here, if not for this being a gypsum quarry. Now, with the quarry inactive, nothing remains but a few small pyrite crystals. Photo taken in August 2006.
Dolomite transparent cubes and iron stained quartz crystals. Rui Nunes' specimen and photo.
Gypsum, field of view 70x55mm
Somewhat stained radial quartz crystal aggregate with colourless dolomite crystals. Rui Nunes' specimen and photo, August 2010.
Lovely pyrite twin from Avarela. Former collection of Rui Nunes. Xl 1 cm wide. Photo Eddy Vervloet, collection Karina Belis (320)
© Eddy Vervloet
Twinned pyrite crystals ( Iron Cross ) up to 7mm - Self-collected in June of 2001
Dolomite crystals on matrix. Rui Nunes' specimen and photo, January 2008.
Selenite fov 20 mm. Rui Nunes specimen and photo. February 2007.
© Rui Nunes 2007
Pice with 8cm. Collected by A.Monteiro
Field of view 3 cm.
© 2006 Rafael Nunes
Gypsum pice with 12cm Collected by A.Monteiro
Small pyrite cystal in situ. Rui Nunes' photo taken in 2006.
Gypsum cristal, field of view 50x40mm
Crystals up to 4mm on Limestone - Self-collected in June of 2001
Piryte crystals on a gypsum matrix. Rui Nunes' specimen and photo, January 2009.
© Rui Nunes 2009
© 2008 Rafael Nunes
Several pyrite iron cross twins. Rui Nunes' specimen and photo, May 2008.
Dolomite crystals on matrix. Rui Nunes' specimen and photo, May 2008.
Gypsum cristals, field of view 65x50mm
Pyrite Iron Cross Twin crystal. Vasco Trancoso collection and photo. Self collected (21th February 2009). Size: 8 X 7 X 7 mm. Not an huge crystal but a perfect one. There is a well defined cross in every face of crystal.
Selenite crystals on matrix. Rui Nunes' specimen and photo, 2011.
Approx, size 30 cm x 60 cm x 9 cm Collection of the Nuno Miguel Santos
Small pyrite crystals on matrix. Rui Nunes' specimen and photo, September 2008.
Crystal with 1cm on Limestone - Self-collected in June of 2001
Pyrite cristals on Gypsum, field of view 50x40mm
Pyrite iron cross twin. Rui Nunes' specimen and photo, May 2008.
Pyrite crystal 8 mm.
© Rafael Nunes 2011
Selenite crystal collected in 2011. Rui Nunes' specimen and photo.
Crystal with 8mm on Limestone - Self-collected in June of 2001
Crystals up to 8mm on Limestone - Self-collected in June of 2001
Selenitecrfystals on matrix. Rui Nunes' specimen and photo, 2011.
Selenite crystal on matrix. Rui Nunes' specimen and photo, 2011.
