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John Montgomery's Mindat Home Page

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John Montgomery's Mindat Home Page

Registered member since 4th Aug 2011

John Montgomery has uploaded:
2146 Mineral Photos
43 Locality Photos
7 Other Photos

John has published 1 article on mindat.org  RSS Link to blog for John Montgomery
 
Hi,
I'm a field collector from Ottawa, Canada, learning a great deal from Mindat.org.
I have been an avid hiker and trekker for many years. Mineral collecting is a more recently acquired interest.I am now trying to make up for lost time, not having been involved with this great hobby in my younger years!
I also enjoy photographing my finds.
I am now focussing my interest on Canadian minerals and have met some very helpful and experienced collectors who have kindly shared their knowledge with me, advised me, connected me with others in this field, and invited me to collect with them. As a result of this and the educational resources on Mindat, my meagre mineral knowledge has grown somewhat.

I am especially grateful for the help I have received from Mindat members and managers.

John

 

Favourite Photos

108-MX9Pyrite : FeS2

Nanisivik Mine, Nanisivik, Baffin Island, Nunavut Territory, Canada

Dimensions: 3.3 cm x 2.8 cm x 1.6 cm

Enlarged portion of specimen showing detail of two crystals. Faces are labeled on line drawing made with assistance of SHAPE software. C=cube; D=dodecahedron; Tr=trapezohedron; Te=tetrahexahedron. Crystallographic analysis by Norman King.
Copyright: © Norman King      Photo ID: 581886     Uploaded by: Norman King   View Count: 173   Approval status: Public galleries    Type: Photo - 816 x 395 pixels (0.3 Mpix)

612-ELUPyrite : FeS2

Nanisivik Mine, Nanisivik, Baffin Island, Nunavut Territory, Canada

Dimensions: 3.3 cm x 3.2 cm x 2.9 cm

Modified cube of 1.6cm with bladed pyrite after marcasite forming sweet little group. One of the first pieces I collected there back in about 1991 or 1992. Came from a pillar in block 18 of the Main Lens. The ice had sublimated out over the years since it had been opened up leaving just a few crystals and some dust in the vug. I was at the top of the ladder and reaching as high up as I could and pulled it out just as it is.
Copyright: © Gary Dyck      Photo ID: 576727     Uploaded by: Gary Dyck   View Count: 166   Approval status: Public galleries    Type: Photo - 1992 x 1752 pixels (3.5 Mpix)

RQH-A6FBeryl : Be3Al2(Si6O18), Muscovite : KAl2(AlSi3O10)(OH)2

Rio Graia, Trontano, Vigezzo Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy

Field of View: 30 cm

Beleive me or not this is exactly how the Beryl sample of the main picture appeared when I started to remove it.

Obviously Muscovite, Quartz and K-feldspar of non collectible quality appear in this photo of the pegmatitic dyke.

People who think that minerals simply appear between the grass like flowers should medidate on this pair of photograps and on the cultural role of mineral collectors who preserve minerals from their unavoidable distruction due to the action of natural forces like rain, wind, frost and plants roots.
Copyright: © PGB 2011      Photo ID: 571295     Uploaded by: Paolo Giovanni Biffi   View Count: 247   Approval status: Public galleries    Type: Photo - 1229 x 922 pixels (1.1 Mpix)

LY6-FRDSpinel : MgAl2O4

Luc Yen, Yenbai Province, Vietnam

Dimensions: 10 cm x 6 cm x 7.5 cm

Very nice specimen of lustrous, translucent, pinkish-red spinel crystals (one with typical spinel twin)on white marble matrix.

Finding: about 2009

Overall piece size: 10.0 x 6.0 x 7.5 cm
Size of the bigger spinel crystal: 3.5 x 2.5 cm

Mauro Rapazzini private collection.
Copyright: © Mauro Rapazzini 2013      Photo ID: 563198     Uploaded by: Mauro Rapazzini   View Count: 258   Approval status: Public galleries    Type: Photo - 1717 x 1599 pixels (2.7 Mpix)

JJ7-CHRSpinel : MgAl2O4

Bassano Romano, Viterbo Province, Latium, Italy

Field of View: 5 mm

Group of octahedral spinel crystals in metamorphic rock,
Photo taken with Nikon D3200 and Schneider Componon S, 50 mm.F2.8.
Copyright: © Di Domenico Dario      Photo ID: 545575     Uploaded by: Di Domenico Dario   View Count: 290   Approval status: Public galleries    Type: Photo - 1094 x 1200 pixels (1.3 Mpix)

NPY-AGWFluorapatite : Ca2Ca3(PO4)3F

Multiple photos available
Dassu, Braldu Valley, Skardu District, Baltistan, Gilgit-Baltistan, Pakistan

Dimensions: 8.3 cm x 8 cm x 3.6 cm

8.3 x 8.0 x 3.6 cm

A most unusual but striking Apatite specimen from Pakistan. It is not only three dimensional in nature, but it is pure Apatite throughout, with no other species or matrix present, creating a bit of difficulty in the photos discerning where one crystal starts and another begins. Since the crystals are of varying habits, ranging from narrow hexagonal prisms to stout “barrels”, the piece really has a lot going on. Additionally, the unique soft green color, bright lustrous faces, and good transparency/translucency throughout combined with the fact that it is crystallized about 98% of the way around (creating a near “floater” specimen) make it not only distinctive but certainly unique compared to hundreds of other Apatites I’ve seen from Pakistan. The main crystal is not broken, but rather has a tapered termination on one end, with dozens of accenting terminations around the perimeter of the outer prism faces. In fact, all of the crystals on the piece are actually doubly-terminated, including the slender prism which has a re-healed termination on the right side. The given locality from my Pakistani friend was “Dassu”, but I have never seen one like it from this locality, or any other locality in Pakistan for that matter. If anybody has seen a similar piece, or knows the exact locality where it might be from, I would love to hear from you.
Copyright: © Brian Kosnar - Mineral Classics      Photo ID: 538927     Uploaded by: Brian Kosnar   View Count: 236   Approval status: Public galleries    Type: Photo - 887 x 864 pixels (0.8 Mpix)

NAD-LC0Spinel : MgAl2O4

Mogok Township, Pyin-Oo-Lwin District, Mandalay Division, Burma

A gemmy spinel crystal in matrix. Specimen size 5.2 x 3.9 cm.
Copyright: © A&M      Photo ID: 536809     Uploaded by: AM Mizunaka   View Count: 287   Approval status: Public galleries    Type: Photo - 1024 x 843 pixels (0.9 Mpix)

QU6-MQLSpinel : MgAl2O4

Multiple photos available
Des Cedres Dam, Notre-Dame-du-Laus, Antoine-Labelle RCM, Laurentides, Québec, Canada

An octahedron of spinel with "sidecar" crystal measuring 15mm x 10mm, which I hammered out of a chunk of calcite-forsterite on site at Des Cedres.
Collected with Phil B., May,2013
Copyright: © JR Montgomery      Photo ID: 533319     Uploaded by: John Montgomery   View Count: 401   Approval status: Public galleries    Type: Photo - 915 x 915 pixels (0.8 Mpix)

JEV-3KJSpinel : MgAl2O4, Forsterite : Mg2SiO4

Multiple photos available
Des Cedres Dam, Notre-Dame-du-Laus, Antoine-Labelle RCM, Laurentides, Québec, Canada

Dimensions: 4.5 cm x 3.5 cm x 1.5 cm
Largest Crystal Size: 1 cm

Purple-blue spinel crystals with main octahedral crystal 1cm on edge in a forsterite matrix
Personally collected with P. Belley, in April, 2013
Copyright: © JR Montgomery      Photo ID: 533047     Uploaded by: John Montgomery   View Count: 251   Approval status: Public galleries    Type: Photo - 2491 x 2492 pixels (6.2 Mpix)

DCP-4PFSpinel : MgAl2O4, Forsterite : Mg2SiO4, Calcite : CaCO3

Multiple photos available
Des Cedres Dam, Notre-Dame-du-Laus, Antoine-Labelle RCM, Laurentides, Québec, Canada

Dimensions: 3 cm x 3 cm x 2 cm

A sharp, purple, crystal 7mm x5mm on calcite-forsterite matrix 3cm x 3cm x 2cm

Collected with P. Belley, May 2013
Copyright: © JR Montgomery      Photo ID: 533039     Uploaded by: John Montgomery   View Count: 318   Approval status: Public galleries    Type: Photo - 1522 x 1522 pixels (2.3 Mpix)
Photos 1 to 10 of 225
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