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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: May 11, 2013 13:04 Post subject: Re: Collection of Mark Ost |
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Quartz with dolomite and scheelite. The scheelite is multiple crystals on the dolomite and quartz. They fluoresce a beautiful sky blue with one crystal on the dolomite being significantly more yellow perhaps due to raised molybdenum content in relation to the other crystals.
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Quartz with Dolomite and scheelite Mount Xuebaoding, Mainyang, Sichuan, China 10cm x 3cm x 2cm |
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23065 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: May 12, 2013 19:11 Post subject: Re: Collection of Mark Ost |
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Scheelite crystals SW UV
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Scheelite Mount Xuebaoding, Mainyang, Sichuan, China 2mm x2mm x 2mm |
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23027 Time(s) |
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Scheelite Mount Xuebaoding, Mainyang, Sichuan, China 2mm x2mm x 2mm |
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23013 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 05, 2013 05:54 Post subject: Re: Collection of Mark Ost |
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A zoned Fluorite from the Elmwood Mine Tennessee
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Fluorite Elmwood Mine, Tennessee, USA 7cm x 4 cm x 5cm |
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22884 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 05, 2013 05:58 Post subject: Re: Collection of Mark Ost |
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Fluorite and Pyrite. Morocco
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Fluorite and Pyrite El Hammam, Meknes, Meknes-Tafiloalet Region 5cm x 5cm x 5 cm |
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22849 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 05, 2013 06:03 Post subject: Re: Collection of Mark Ost |
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Fluorescent Talc and Tremolite in SW UV, New York USA
Yellow is talc and the orange is tremolite
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Talc and tremolite GTC Arnold Open Pit, Balmat , New York , USA 18cm x7 cm 13cm |
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22917 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 05, 2013 06:15 Post subject: Re: Collection of Mark Ost |
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One more fluorescent piece from Arizona with willemite, calcite and really pretty blue hydrozincite. Visible in SW UV. The piece also has sphalerite, visible in LW, which has an extreme afterglow of an intense orange hue.
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Willemite, Calcite, Hydrozincite and Sphalerite Nellie James Mine, Miller Canyon, Huachuca Mountains, Arizona, USA 10cm x 8 cm x 6 cm |
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22847 Time(s) |
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Willemite, Calcite, Hydrozincite and Sphalerite Nellie James Mine, Miller Canyon, Huachuca Mountains, Arizona, USA 10cm x 8 cm x 6 cm |
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22832 Time(s) |
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Willemite, Calcite, Hydrozincite and Sphalerite Nellie James Mine, Miller Canyon, Huachuca Mountains, Arizona, USA 10cm x 8 cm x 6 cm |
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22857 Time(s) |
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Sphalerite Nellie James Mine, Miller Canyon, Huachuca Mountains, Arizona, USA 10cm x 8 cm x 6 cm |
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22840 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 07, 2013 15:49 Post subject: Re: Collection of Mark Ost |
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Here are some pictures of a highly unusual mineral sample that showed up at my door step from an old friend. He is now a retired Forest Service Supervisor who was stationed in the Upper Peninsula of Michigan.
The samples are of a mineral known as Chlorastrolite, a variety of pumpellyite. As far as I know these are found in only one known location on earth, the UP of Michigan. Usually as rounded beach sediment. This is also the official gemstone of Michigan. All are small in the .5 cm range.
The largest is in the Smithsonian collection, measuring 4 cm by 8 cm. Pictured is the turtle back exterior pattern of three samples and one picture of the radiating, color zoned structure of a cross section of the interior of the mineral. I hope you enjoy these small but unique mineral samples that I was fortunate to receive.
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Chlorastrolite Isle Royale, Upper Peninsula Michigan, USA .5cm x.5cm |
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22752 Time(s) |
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Chlorastrolite Isle Royale, Upper Peninsula Michigan, USA .5cm x.5cm |
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22775 Time(s) |
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Chlorastrolite Cross section Isle Royale, Upper Peninsula Michigan, USA .5cm x .75cm |
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22797 Time(s) |
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Chlorastrolite Isle Royale, Upper Peninsula Michigan, USA .5cm x .75cm |
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22809 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 10, 2013 21:19 Post subject: Re: Collection of Mark Ost |
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Adamite and Smithsonite on a limonite matrix. Will post micro-photos at a later time. sample is fluorescent in SW and MW
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Adamite and Smithsonite Serpieri Mine, Kamaritza Mines, Attiki, Greece 5.5 cm x 3 cm x 2.5 cm |
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22737 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 10, 2013 21:24 Post subject: Re: Collection of Mark Ost |
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Same piece under MW fluorescent light
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Adamite and Smithsonite Serpieri Mine, Kamaritza Mines, Attiki, Greece 5.5 cm x 3 cm x 2.5 cm |
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22734 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 10, 2013 21:28 Post subject: Re: Collection of Mark Ost |
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Stibnite and Calcite from China.
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Stibnite and Calcite Xikuangshan Mine, Lengshuijiang, Hunan, China 3 cm x 3 cm |
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22741 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Jun 10, 2013 21:33 Post subject: Re: Collection of Mark Ost |
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Azurite so deep blue it is almost black. The picture does not do this piece justice as to the depth of color.
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Azurite Touissit, Oujda, Morocco 2.5 cm x 1.5 cm x 2 cm |
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22730 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Aug 30, 2013 10:19 Post subject: Re: Collection of Mark Ost |
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Been a bit of time since I was able to play with the microscope but have a few free days now so this is some of the work from last night.
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Quartz Var. Amethyst Cava Capurru, Osilo Sassari, Sardegna, Italia 1cm x .5cm x .5cm |
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22180 Time(s) |
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Quartz Var. Amethyst Cava Capurru, Osilo Sassari, Sardegna, Italia 1cm x .5cm x .5cm |
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22248 Time(s) |
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Quartz Var. Amethyst Cava Capurru, Osilo Sassari, Sardegna, Italia 1cm x .5cm x .5cm |
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22177 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Aug 30, 2013 10:33 Post subject: Re: Collection of Mark Ost |
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Celestine and Sulfur from Italy and Roselite from Morocco
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Celestine Agrigento, Sicily. Italia .4cm x .2cm x .1cm |
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22138 Time(s) |
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Celestine Agrigento, Sicily. Italia .4cm x .2cm x .1cm |
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22133 Time(s) |
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22136 Time(s) |
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Roselite Agoudal Mine, Bou Azer District, Souss-Massa-Draa, Morocco .5 cm x .2cm x .7cm |
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22148 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Aug 30, 2013 16:01 Post subject: Re: Collection of Mark Ost |
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Here is an unusual offering. Hydroxylherderite from Pakistan. A spectacular blue in SW UV. Not sure what the yellow green mineral is.
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Hydroxylherderite Braldu Valley, Skardu District, Balistan, Pakistan 4cmX2cmx2cm |
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22057 Time(s) |
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Hydroxylherderite Braldu Valley, Skardu District, Balistan, Pakistan 4cmX2cmx2cm |
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22071 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Oct 14, 2013 17:04 Post subject: Re: Collection of Mark Ost |
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Rubellite From the FSU
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Elbaite (variety Rubellite) Malkhan, Krasnyi Chikoy, Chitinskaya Oblast, Russia 7.6cm x 4 cm x 3.9 cm |
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21671 Time(s) |
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Elbaite (variety Rubellite) Malkhan, Krasnyi Chikoy, Chitinskaya Oblast, Russia 7.6cm x 4 cm x 3.9 cm |
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21684 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Oct 14, 2013 17:07 Post subject: Re: Collection of Mark Ost |
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Brazilian Elabaite
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Elbaite Minas Gerais, Brazil 5.4cm x1.8cm x1.8cm |
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21680 Time(s) |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Oct 14, 2013 19:29 Post subject: Re: Collection of Mark Ost |
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Here is an interesting piece I just received. It is quartz with zoned fluorapatite crystals and a bit of siderite on the termination of the quartz. The fluorapatite displays almost Terlingua type luminescence dependent on the wave length of the excitation light. The faces fluoresce a blue hue in short wave and a pinkish hue in medium wave. It also displays an after glow subsequent to exposure to SW. The siderite has a dull orange fluorescence that does photograph well.
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Quartz, Fluorapatite, Siderite Minas da Panasqueira, Castelo Branco, Portugal 3.6 x 1.9 x 1.9 cm |
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21630 Time(s) |
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Quartz, Fluorapatite, Siderite Minas da Panasqueira, Castelo Branco, Portugal 3.6 x 1.9 x 1.9 cm Medium Wave |
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21615 Time(s) |
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Quartz, Fluorapatite, Siderite Minas da Panasqueira, Castelo Branco, Portugal 3.6 x 1.9 x 1.9 cm Short Wave |
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21600 Time(s) |
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Quartz, Fluorapatite, Siderite Minas da Panasqueira, Castelo Branco, Portugal 3.6 x 1.9 x 1.9 cm Rear view |
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21642 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Oct 14, 2013 21:55 Post subject: Re: Collection of Mark Ost |
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Nice specimen, Mark. Thanks for demonstrating the fluorescence.
Don
_________________ hogwild |
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Oct 15, 2013 18:09 Post subject: Re: Collection of Mark Ost |
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Thanks Don. it deserves a better photographer than I am, but you can only do so much!
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Oct 15, 2013 18:17 Post subject: Re: Collection of Mark Ost |
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Here are a couple of pictures demonstrating the ultra violet portion of the sun's spectrum causing a Rogerly fluorite to fluoresce, created by, of all things, a slit in my garage door rail. I noticed the slit created a diffraction grating due to the angle of the sun light passing through the slit and splitting the light into a spectrum on a piece of wood. What to do? Run and get your most sensitive fluorite and place it in the blue indigo section of the spectrum.
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Fluorite and maybe garage doorite Rogerly England 3cm x 5cm x3cm |
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21484 Time(s) |
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Fluorite and maybe garage doorite Rogerly England 3cm x 5cm x3cm |
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21477 Time(s) |
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