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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 19:56 Post subject: Collection Macros |
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Got some macros of pieces I've collected myself only. Iphone 4 with loupe as macro lens so don't judge me haha! I think they came out nicely. Most pieces are calcite or fluorite from Columbus, Ohio rock dumps from quarries. I also have a lucky find from my birth state of New Mexico, at the Bingham Mine. Two other finds came from Mexico and Morocco while on vacations.
Mineral: | Calcite |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 2cm x 1.5cm |
Description: |
Calcite after unknown fossil in dolostone matrix |
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27424 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 19:58 Post subject: Re: Collection Macros |
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another piece
Mineral: | Calcite |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 3cm x 2cm |
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27436 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:00 Post subject: Re: Collection Macros |
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nice honey color
Mineral: | Calcite |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | .5cm x .5cm |
Description: |
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27424 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:09 Post subject: Re: Collection Macros |
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clear fluorite
Mineral: | Fluorite |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | Crystal .5cm by .5cm |
Description: |
Fluorite with modified cubic growth it seems shifted to a rhomboid shape, all exhibit bright blue fluorescence under 390nm UV |
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27446 Time(s) |
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Mineral: | Fluorite |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 1cm x 1cm (Crystal) |
Description: |
Fluorite with same modified growth |
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27414 Time(s) |
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Mineral: | Fluorite |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 1cm x 1cm (Crystal) |
Description: |
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27431 Time(s) |
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Mineral: | Fluorite |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 2cm x 2cm (Crystals) |
Description: |
Standard cubic growth with blue fluorescence |
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27416 Time(s) |
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Mineral: | Fluorite |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 15cm long x 1cm wide (vug) |
Description: |
Fluorite with slightly modified growth in a long vug |
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27414 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:12 Post subject: Re: Collection Macros |
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Agate and Quartz
Mineral: | Quartz |
Dimensions: | 5cm wide x 15cm long |
Description: |
seems like iron staining on the otherwise clear quartz crystals found on same lump of agate and chalcedony |
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27413 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:14 Post subject: Re: Collection Macros |
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Quartz geode
Mineral: | Quartz |
Dimensions: | geode is roughly 40cm x 30cm |
Description: |
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27399 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:15 Post subject: Re: Collection Macros |
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both quartz finds were from the Olentangy River Columbus Ohio, Franklin County USA
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:20 Post subject: Re: Collection Macros |
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New Mexico find
Mineral: | Fluorite with Barite |
Locality: | Bingham, Hansonburg District, Socorro County, New Mexico, USA | |
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Dimensions: | 20cm x 15cm |
Description: |
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27401 Time(s) |
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Mineral: | Fluorite |
Locality: | Bingham, Hansonburg District, Socorro County, New Mexico, USA | |
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Dimensions: | 20cm x 15cm |
Description: |
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27398 Time(s) |
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Mineral: | Fluorite |
Locality: | Bingham, Hansonburg District, Socorro County, New Mexico, USA | |
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Dimensions: | 20cm x 15cm |
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27401 Time(s) |
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Mineral: | Fluorite |
Locality: | Bingham, Hansonburg District, Socorro County, New Mexico, USA | |
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Dimensions: | 20cm x 15cm |
Description: |
Left side has phantoms almost reminiscent of cave in rock |
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27415 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:28 Post subject: Re: Collection Macros |
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Morocco trip
Mineral: | Fluorite |
Locality: | Morocco | |
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Description: |
Found while hiking near a mine that I never found name of 6cm x 6cm Wonderful purple phantom on top and blue green original growth. Brilliant blue fluorescence in 390nm UV |
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27432 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:28 Post subject: Re: Collection Macros |
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same trip same piece
Mineral: | Fluorite |
Locality: | Morocco | |
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Dimensions: | 6cm x 6cm |
Description: |
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27399 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:32 Post subject: Re: Collection Macros |
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From White rock quarry
Mineral: | Fluorite with Celestine |
Locality: | White Rock Quarry, Clay Center, Ottawa County, Ohio, USA | |
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Dimensions: | 1.5cm x 1.5cm (area of photo) |
Description: |
Green fluorescence at 390nm UV |
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27373 Time(s) |
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Locality: | White Rock Quarry, Clay Center, Ottawa County, Ohio, USA | |
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Dimensions: | 1.5cm x 1.5cm (Crystal) |
Description: |
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27377 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 03, 2018 20:34 Post subject: Re: Collection Macros |
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mexico trip, found outside in a tailings pile
Mineral: | Fluorite |
Locality: | Coahuila (Coahuila de Zaragoza), Mexico | |
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Dimensions: | 4cm x 4cm (Crystal) |
Description: |
the whole crystal was clear and just the very outermost layer began a purple colorization |
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27851 Time(s) |
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Mineral: | Fluorite |
Locality: | Coahuila (Coahuila de Zaragoza), Mexico | |
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Dimensions: | 3cm x 2cm |
Description: |
different crystal with deep purple coloring |
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27374 Time(s) |
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Firmo Espinar
Joined: 05 Apr 2017
Posts: 758
Location: Medellín, Colombia.
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Posted: Aug 04, 2018 06:34 Post subject: Re: Collection Macros |
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Hi Oliver.
Please read the following link in order to avoid overloading the users posts box:
How to add multiple photos to a Post
Regards.
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Bob Carnein
Joined: 22 Aug 2013
Posts: 331
Location: Florissant, CO
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Posted: Aug 04, 2018 10:05 Post subject: Re: Collection Macros |
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Hi Oliver,
The first three Alum Creek fluorites look like calcite to me. Hard to tell from the photos, but the first one appears to have rhombohedral cleavage; second looks like a complex parallel growth of calcite scalenohedra; third is hard to decipher but may be a "nail head" calcite crystal.
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Bob Harman
Joined: 06 Nov 2015
Posts: 765
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Posted: Aug 04, 2018 10:37 Post subject: Re: Collection Macros |
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OLIVER, I agree with BOB C. I would not be surprised if all your Alum Creek "fluorites" turned out to be calcite. Small calcites can occasionally cleave giving an impression of being a small fluorite crystal; I am just not sure on some of yours. And if it comes from the bike path, it would be fill from another (quarry?) locality.
I would like to see a picture or 2 of the whole specimen of your quartz photo showing the "scepter". That seems very unusual for that locality.
BOB
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 04, 2018 11:58 Post subject: Re: Collection Macros |
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Hardness test of 4 after my tests, That's why they are so interesting to me; I wonder why their structure changed, I concluded that it had to be Fluorite. Thanks bob!
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 04, 2018 12:04 Post subject: Re: Collection Macros |
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Bob Harman,
I will post a few pictures of the geode I collected. I also thought it very strange to be in the river. I almost thought it was a discarded geode someone else collected or lost from another locale, however it wasn't cracked open yet.
Mineral: | Quartz |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 10cm x 10cm |
Description: |
some more complete shots of the specimen |
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27126 Time(s) |
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Mineral: | Quartz |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 10cm x 10cm |
Description: |
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27116 Time(s) |
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Mineral: | Quartz |
Locality: | Alum Creek, Columbus, Franklin County, Ohio, USA | |
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Dimensions: | 10cm x 10cm |
Description: |
area shot containing the scepter of quartz |
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27114 Time(s) |
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Bob Carnein
Joined: 22 Aug 2013
Posts: 331
Location: Florissant, CO
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Posted: Aug 04, 2018 12:15 Post subject: Re: Collection Macros |
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Hi, again--can you tell me how you tested the hardness on the Alum Creek fluorites?
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Bob Harman
Joined: 06 Nov 2015
Posts: 765
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Posted: Aug 04, 2018 12:27 Post subject: Re: Collection Macros |
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OLIVER, Your last 3 photos almost certainly show a Mexican geode of the type I have pictured. These were marketed as Rock Candy Geodes at the 2007 Tucson show. They are quite similar to yours with starburst like groups of small sceptered quartz crystals. I have the example pictured in the poster.
Unless there are other very similar examples definitely associated with the Olentangy River Ohio locality, finding your example suggests it was discarded by someone in the past. Look around in that area again and maybe you will be lucky with additional finds!
BOB
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27074 Time(s) |
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Oliver B
Joined: 30 Jul 2018
Posts: 27
Location: Columbus, Ohio
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Posted: Aug 04, 2018 13:07 Post subject: Re: Collection Macros |
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Bob Carnein, I first tested the very tip of the crystal with my fingernail and it left visible scratches on my nail, following up I used a copper plated penny and found that it also scratched the copper. Finally I took a carbon steel knife and found that it scratched very easily on the fluorite. Combined with the fluorescence and the fact that the other crystals in the same rock dump were easily distinguishable as calcite with dog tooth spar formation, I drew the conclusion that it was Fluorite. I hope my hardness test was satisfactory.
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