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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1537
Location: Catalonia
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 Posted: Mar 15, 2013 16:44 Post subject: Re: Collection of Michael Shaw |
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| crosstimber wrote: | | Thank you very much Pierre. I'm very pleased that you are enjoying some of the minerals in my humble collection. |
Michael,
In no way is your collection humble. And your photography is indeed excellent! Please keep posting until you run out of specimens.
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Mar 17, 2013 14:30 Post subject: Re: Collection of Michael Shaw |
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Thank you Carles. I'm not likely to run out of specimens any time soon, but some are not very photogenic :>)
Continuing with Mexico again today.
| Description: |
Chabazite
Curea, Sonora, Mexico
4.3 x 7.5 cm.
Lustrous white chabazite crystals to 1.7 cm in association with minor stilbite. |
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52264 Time(s) |
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| Description: |
Celestine
Mojina Mine, Mun. de Buenaventura, Chihuahua, Mexico
6.1 x 8.0 cm.
Botryoidal white calcite studded with small blue crystals of celestine. |
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52231 Time(s) |
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| Description: |
Baryte
Ojuela Mine, Mapimi, Durango, Mexico
6.2 x 6.5 cm.
Light brown, bladed Baryte in fan-shaped groups covering the top of a gossan matrix sprinkled with tiny calcite crystals over conichalcite. |
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52205 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Mar 19, 2013 10:17 Post subject: Re: Collection of Michael Shaw |
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More from Mexico.
| Description: |
Quartz var. amethyst
Valenciana Mine, Amatitlan, Guerrero, Mexico
3.3 x 6.7 cm.
Amethyst crystals in parallel growth with grape-purple zones at the base grading to colorless at the terminations. |
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52221 Time(s) |
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Anhydrite
Naica, Mun. de Saucillo, Chihuahua, Mexico
3.3 x 8.8 cm.
Intersecting fan-shaped groups of pale blue anhydrite crystals with a second generation of smaller crystals on the prism surface. |
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52114 Time(s) |
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Fluorite
Gibraltar Mine, Naica, Mun. de Saucillo, Chihuahua, Mexico
5.5 x 7.7 cm.
Light green cubic fluorite crystals on lustrous black sphalerite with white calcite, octahedral galena, and brassy yellow pyrite in association. |
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52143 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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| Posted: Mar 19, 2013 15:13 Post subject: Re: Collection of Michael Shaw |
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The calcite with celestine inclusions is remarkable. Is it fluorescent? Thanks for sharing a unique piece. There seems no end to amazing specimens.
Thanks Again. Mark
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Mar 22, 2013 10:01 Post subject: Re: Collection of Michael Shaw |
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Thanks Mark. It's interesting that you should ask about whether the calcite and celestine specimen from the Mojina Mine is fluorescent. The answer is yes and no. The small blue celestine crystals do not fluoresce, and the calcite knobs that host the celestine are not fluorescent, but there is a layer of white calcite just under the calcite knobs that fluoresces bright green under SW. There is also a small amount of brown matrix on the back of the specimen and that fluoresces red. I don't know what the activator might be.
Today, I will continue with Mexico showing a few pieces from arguably Mexico's greatest mine - the Ojuela Mine.
| Description: |
Legrandite
Ojuela Mine, Mapimi, Durango, Mexico
5.0 x 9.5 cm. FOV=2.0 cm.
Typical brown gossan matrix hosting single crystals and sprays of yellow transparent legrandite crystals to 0.5 cm. |
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| Viewed: |
52002 Time(s) |
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| Description: |
Fluorite
Ojuela Mine, Mapimi, Durango, Mexico
7.0 x 8.5 cm.
Cubic purple fluorite to 1.5 cm on edge. |
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52098 Time(s) |
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| Description: |
Rosasite
Ojuela Mine, Mapimi, Durango, Mexico
7.2 x 8.6 cm.
Velvety blue-green rosasite lining a cavity in typical brown gossan matrix. |
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52016 Time(s) |
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| Description: |
Conichalcite ps. hemimorphite
Ojuela Mine, Mapimi, Durango, Mexico
5.3 x 11.5 cm.
Bright green conichalcite replacing radiating groups of hemimorphite on typical brown gossan matrix. |
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52073 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Mar 25, 2013 11:37 Post subject: Re: Collection of Michael Shaw |
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I am going to finish up Mexico with today's post. The calcite specimens that begin and end this post were once very common at mineral shows. Nowadays, they seem to be few and far between. The images I have shown to date represent about half of the specimens in my collection from this mineral rich country. Maybe I'll resume Mexico at a later time, but I'll probably need to spend some more time behind the camera before then.
It's time to move on, and I suppose there's no better place to start than some of the classic locations in Canada. So, next time I'll begin with Nova Scotia.
Michael
| Description: |
Calcite
Charcas, San Luis Potosi, Mexico
5.2 x 7.0 cm.
A cluster of lustrous, hexagonal white calcite crystals with the classic ‘poker chip’ habit. |
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51976 Time(s) |
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| Description: |
Baryte
El Solar Mine, Level 4, Taxco, Guerrero, Mexico
4.3 x 8.0 cm.
Delicate group of pale blue, bladed Baryte crystals. |
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51965 Time(s) |
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| Description: |
Mottramite
Ojuela Mine, Level 35, Mapimi, Durango, Mexico
3.8 x 5.2 cm.
Dark green, botryoidal mottramite on limonitic matrix from the find in 2011. |
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51918 Time(s) |
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| Description: |
Calcite
Santa Eulalia District, Mun. de Aquiles Serdan, Chihuahua, Mexico
9.5 x 12.5 cm
Scalenohedral calcite crystals coated with hematite with a subsequent generation of lighter-colored rhombic calcites. Fluoresces orange under SW UV. |
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52079 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Mar 27, 2013 08:56 Post subject: Re: Collection of Michael Shaw |
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The Bay of Fundy is well known for having the greatest tidal range in the world. To mineral collectors, however, it is known for a variety of zeolite minerals that occur in the brown basalt cliffs along the bay. While collecting, one has to keep a close watch on the tides to avoid getting cut off from an egress route. Today's selections all originate from this picturesque area.
| Description: |
Stilbite
Partridge Island, Cumberland Co., Nova Scotia, Canada
7.2 x 8.0 cm.
Brownish-orange stilbite crystals lining a cavity in weathered brown basalt. |
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| Viewed: |
51832 Time(s) |
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| Description: |
Heulandite
Cape Blomidon, Kings Co., Nova Scotia, Canada
3.8 x 5.7 cm.
Intergrown pearly-lustered pink heulandite crystals on basalt. |
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| Viewed: |
51786 Time(s) |
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| Description: |
Chabazite
Wasson's Bluff, near Parrsboro, Cumberland Co., Nova Scotia, Canada
5.0 x 7.5 cm.
Intergrown salmon-colored crystals of chabazite to 1.3 cm on edge. |
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51845 Time(s) |
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| Description: |
Copper
Colonial Copper Mine, Bennet Brook, Cape D'Or, Cumberland Co., Nova Scotia, Canada
2.3 x 2.7 cm. |
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51837 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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| Posted: Mar 27, 2013 19:13 Post subject: Re: Collection of Michael Shaw |
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| In https://www.mineral-forum.com/message-board/viewtopic.php?p=29804#29804 crosstimber wrote: | | Thanks Mark. It's interesting that you should ask about whether the calcite and celestine specimen from the Mojina Mine is fluorescent. The answer is yes and no. The small blue celestine crystals do not fluoresce, and the calcite knobs that host the celestine are not fluorescent, but there is a layer of white calcite just under the calcite knobs that fluoresces bright green under SW. There is also a small amount of brown matrix on the back of the specimen and that fluoresces red. I don't know what the activator might be... |
You are welcome. I have some time under the belt with fluorescents and often you need to look closely to see what is really fluorescing. The microscope often show that underlying material is the source of light. Well it is a nice sample even if you can't see it at night!
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Mar 29, 2013 09:45 Post subject: Re: Collection of Michael Shaw |
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In today's post we will journey west from Nova Scotia to the province of Quebec. Canada's largest province in area, Quebec is home to one of the world's most famous and studied mineral deposits - Mont Saint-Hilaire. This locality lies a short distance east of Montreal and has produced 398 recognized species, as well as being the type locality for 58 minerals. For a good overview of the geology and some of the minerals found at this locality refer to the Mineralogical Record, Vol. 21: 284-359.
| Description: |
Serandite
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
3.8 x 4.0 cm.
Blocky salmon-colored serandite crystals with minor white albite and reddish-brown microcrystals of manganoneptunite. |
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| Viewed: |
51703 Time(s) |
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| Description: |
Analcime
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
4.0 x 4.7 cm.
Well-formed dodecahedral crystal of analcime measuring associated with brown siderite and bladed gray albite. |
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| Viewed: |
51753 Time(s) |
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| Description: |
Astrophyllite
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
4.0 x 5.3 cm.
Fan-shaped groups of acicular bronze-brown astrophyllite crystals in association with black aegirine and gray albite. |
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| Viewed: |
51687 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Mar 31, 2013 09:43 Post subject: Re: Collection of Michael Shaw |
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A few more from Mont Saint-Hilaire.
| Description: |
Aegirine
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
3.0 x 4.7 cm.
Lustrous aegirine crystal with small bladed gray albite and white microcline crystals attached to the sides and back. |
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| Viewed: |
51702 Time(s) |
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| Description: |
Elpidite
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
1.0 x 5.0 cm.
Elongated bundle of pale tan crystals in parallel growth associated with pyrite and tiny white albite crystals. |
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| Viewed: |
51600 Time(s) |
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| Description: |
Calcioancylite-Ce ps. after remondite
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
2.0 x 3.7 cm.
Grayish-purple calcioancylite-Ce replacing remondite. This species exhibits an interesting optical phenomenon. When viewed under
incandescent lighting it is pale purple and turns gray/green under fluorescent (not UV) lighting. Details of this find appeared in the July/Aug. 2000 issue of Lapis. |
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| Viewed: |
51584 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Apr 02, 2013 08:59 Post subject: Re: Collection of Michael Shaw |
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More from MSH.
| Description: |
Natrolite
Mont Saint-Hilaire, Monteregie, Quebec, Canada
5.6 x 6.9 cm.
Radiating groups of dull prismatic colorless natrolite associated with acicular black aegirine. The back side is covered with platy polylithionite pictured in the next photo. |
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| Viewed: |
51558 Time(s) |
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| Description: |
Polylithionite on natrolite
Mont Saint-Hilaire, Monteregie, Quebec, Canada
5.6 x 6.9 cm
Silvery plates of polylithionite with natrolite and aegirine. |
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| Viewed: |
51552 Time(s) |
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| Description: |
Leifite
Mont Saint-Hilaire, Monteregie, Quebec, Canada
5.9 x 6.8 cm.
Silky white sprays of leifite on gray albite with minor rhodochrosite and aegirine. |
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| Viewed: |
51534 Time(s) |
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| Description: |
Rhodochrosite
Mont Saint-Hilaire, Monteregie, Quebec, Canada
6.5 x 8.0 cm.
Dark red rhombs of rhodocrosite to 2 mm associated with gray-green acicular elpidite, white albite, dark green aegirine, and acicular white leifite. |
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| Viewed: |
51519 Time(s) |
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| Description: |
Rhodochrosite and elpidite
Mont Saint-Hilaire, Monteregie, Quebec, Canada
6.5 x 8.0 cm
Closeup view of above specimen. FOV is approximately 3.5 cm. |
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| Viewed: |
51553 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Apr 05, 2013 08:08 Post subject: Re: Collection of Michael Shaw |
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Last post for MSH before moving on to other Quebec localities.
| Description: |
Carletonite
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
1.2 x1.8 cm. |
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| Viewed: |
51429 Time(s) |
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| Description: |
Siderite
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
2.2 x 2.6 cm.
Tan rhombs of siderite sprinkled with small dolomite crystals. |
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| Viewed: |
51465 Time(s) |
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| Description: |
Rhodochrosite
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
1.0 x 2.5 cm.
Dark red twinned rhodochrosite crystal. |
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| Viewed: |
51403 Time(s) |
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| Description: |
Zircon
Poudrette Quarry, Mont Saint-Hilaire, Monteregie, Quebec, Canada
5.4 x 7.2 cm FOV = 2.5 cm.
Bipyramidal brown zircon crystals associated with sprays of milky white natrolite. The zircons exhibit weak yellow fluorescence under SW UV. |
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| Viewed: |
51382 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Apr 08, 2013 14:19 Post subject: Re: Collection of Michael Shaw |
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Another well-known mineral producer in Quebec besides Mont Saint-Hilaire is the Jeffrey Mine. This huge open pit asbestos mine has produced over 100 different species, but is probably most noted for vesuvianite and wonderful demantoid and grossular garnets.
| Description: |
Vesuvianite
Jeffrey Mine, Asbestos, Estrie, Quebec, Canada
5.5 x 6.0 cm.
Intergrown, partly gemmy, lustrous apple green vesuvianite crystals. |
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| Viewed: |
51293 Time(s) |
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| Description: |
Vesuvianite
Jeffrey Mine, Asbestos, Estrie, Quebec, Canada
4.7 x 7.3 cm.
A vuggy matrix filled with lustrous, purple crystals of vesuvianite. |
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| Viewed: |
51370 Time(s) |
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| Description: |
Grossular
Jeffrey Mine, Asbestos, Estrie, Quebec, Canada
3.5 x 4.6 cm.
Small amounts of chromium are responsible for the green color in these garnets. |
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| Viewed: |
51343 Time(s) |
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| Description: |
Grossular
Jeffrey Mine, Asbestos, Estrie, Quebec, Canada
4.0 x 6.5 cm.
Gemmy pale green grossular crystals to 2 mm with acicular microcrystals of green diopside on a mound of white matrix. |
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| Viewed: |
51294 Time(s) |
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| Description: |
Grossular var. hessonite
Jeffrey Mine, Asbestos, Estrie, Quebec, Canada
1.6 x 1.8 cm.
Gemmy orange grossular var. hessonite with sharp growth patterns on the crystal faces. |
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| Viewed: |
51291 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2252
Location: Oklahoma
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| Posted: Apr 10, 2013 08:10 Post subject: Re: Collection of Michael Shaw |
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Today, a few specimens from other notable localities around Quebec.
| Description: |
Fluorapatite
Yates Mine, Otter Lake, Pontiac RCM, Quebec, Canada
7.1 x 11.1 cm.
Doubly terminated green and brown fluorapatite crystal on granular salmon-colored calcite. These are notoriously difficult to extract in one piece and keep attached to the matrix. As a result most crystals are stabilized with cyanocrylate. |
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| Viewed: |
51218 Time(s) |
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| Description: |
Cubanite
Henderson Mine # 2, Chibougamou, Quebec, Canada
3.7 x 6.9 cm.
Sharply twinned lustrous cubanite crystal on matrix. This mine produced the finest cubanite crystals known, and closed in 1988. |
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| Viewed: |
51238 Time(s) |
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| Description: |
Molybdenite
Moly Hill Mine, La Motte, Abitibi RCM, Quebec, Canada
4.0 x 4.5 cm.
Lustrous metallic molybdenite crystal measuring 2.0 cm across on a massive quartz matrix. |
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| Viewed: |
51318 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2919
Location: Arkansas
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| Posted: Apr 10, 2013 10:07 Post subject: Re: Collection of Michael Shaw |
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Michael, I wish my collection was as well organized as yours. I really enjoy looking at your collection.
Regards,
Don
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hogwild |
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