Past Photos of the Day

Click on a photo to view a larger version of the image. Click on a mineral or locality name to link to that particular mineral or locality. Click on a member's name to view their gallery of other mineral photos.

12th May 2008

MineralFluorite

Locality2nd Sovietski Mine (2nd Sovietskiy Mine), Dal'negorsk (Dalnegorsk), Primorskiy Kray, Far-Eastern Region, Russia

Posted byTony Peterson

An exquisite optical fluorite miniature, 4 cm high, with no external damage - its only flaw, if it is that, is an internal cleavage plane in two individual crystals. The calcite-rich matrix has a single, nearly invisible contact point. Several perspectives are needed to appreciate this specimen, and they are provided. Collection and photo, T. Peterson.

11th May 2008

MineralGmelinite-Na

LocalityPoudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville Co., Québec, Canada

Posted byModris Baum

Modris Baum collection. FOV 2.2 x 2.4 mm. As of September 2007, gmelinite-Na is the only gmelinite species found at MSH. The two child photos show other xls on this specimen.

10th May 2008

MineralsPerraultite, Zircon, Albite, Hastingsite

LocalityUnnamed Quarry, Dmitrievka village, Mariupol' Massif (Oktyabr'skii), Azov Sea Region, Donets'k Oblast' (Donetsk Oblast'), Ukraine

Posted byPavel Kartashov

Apparently the largest known perraultite crystal (7.5x3x1 mm in size) in feldspar matrix. Pinkish dipyramidal zircon (var. auerbachite) crystals are visible. Greenish-black amphibole is analysed hastingsite. Self-collected in June 1994. Pavel M. Kartashov collection (#3369) and photo.

9th May 2008

MineralMascagnite

LocalityShamokin, Northumberland Co., Pennsylvania, USA

Posted byJeffrey Weissman

0.4 cm, horizontal, field of view, white dendritic mascagnite, colored yellow by sulfur, a product of desposits formed from material derived from burning coal. Excalibur Mineral specimen.

8th May 2008

MineralAragonite

LocalityGiumentaro Mine, Ponte Capodarso, Caltanissetta Province, Sicily, Italy

Posted byFabio Brignoli

Aragonite crystals on matrix. Field of view mm 40x30 Photo and collection Fabio Brignoli (roccelllans)

7th May 2008

MineralsAndradite, Hedenbergite

LocalityBor Pit (Boron Pit; Bor Quarry), Dal'negorsk (Dalnegorsk), Primorskiy Kray, Far-Eastern Region, Russia

Posted byManfred Kampf

Field of view 12 mm. Collection M. Kampf No 06-175.

6th May 2008

MineralPyrite

LocalityAvarela, Óbidos, Leiria District, Portugal

Posted byRui Pereira Nunes

Pyrite iron cross twin 10 mm. Rui Nunes spec. and photo.

5th May 2008

MineralCalcite

LocalityBaoshan Prefecture, Yunnan Province, China

Posted byGeoffrey Krasnov

An 8.5cm X 3.8cm X.7cm branching hoppered crystal exhibiting "chalice cup" terminations.

4th May 2008

MineralGreenockite

LocalityHuron River uranium prospect (Unnamed Vanadium Prospect MRDS - 10171055), Huron River, Baraga Co., Michigan, USA

Posted byJohn A. Jaszczak

Greenockite crystals to 0.2 mm long, partly dissolved from enclosing calcite. Composite image made using Helicon Focus software. See Rocks & Minerals 82 (2007) 298-308. A. E. Seaman Mineral Museum collection.

3rd May 2008

MineralsStilbite, Calcite

LocalityFaroe Islands (Faeroe Islands; Faeroes; Faroes), Denmark

Posted byMatteo Chinellato

Very nice 9 mm Stilbite crystal with Calcite crystals. Collection D.Mauro Photo M.Chinellato