We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences

FMF English Forum is moderated by John S. White and Peter Megaw
 

Spanish message board






Newest topics and users posts
23 Jan-11:14:27 Re: collection of michael shaw (Crosstimber)
23 Jan-10:42:05 Re: collection of michael shaw (Bob Harman)
23 Jan-10:02:32 Re: collection of michael shaw (Crosstimber)
23 Jan-09:41:07 Re: franjungle collection (Franjungle)
23 Jan-05:32:19 Re: collection of heimo hellwig (Heimo Hellwig)
23 Jan-04:39:34 Re: collection of heimo hellwig (Stefan Koch)
23 Jan-00:03:17 Re: collection of heimo hellwig (Heimo Hellwig)
22 Jan-23:00:35 Re: tucson show 2019 (Dave Varabioff)
22 Jan-21:52:57 Re: tucson show 2019 (Byron Anderson)
22 Jan-18:31:12 Re: what defines a collection's quality (Dave Varabioff)
22 Jan-15:32:11 Re: locality of calcite with hematite phantoms? (Kevin Conroy)
22 Jan-14:30:54 The mizunaka collection - rhodochrosite (Am Mizunaka)
22 Jan-11:17:25 Re: tucson show 2019 (Dave Varabioff)
22 Jan-10:25:35 Re: tucson show 2019 (Bob Harman)
22 Jan-09:33:52 Re: tucson show 2019 (Bob Kerr)
22 Jan-08:15:23 Locality of calcite with hematite phantoms? (Tchai)
22 Jan-06:54:20 Re: tucson show 2019 (Bob Harman)
22 Jan-02:39:09 Re: tucson show 2019 (Jordi Fabre)
22 Jan-02:35:26 Re: tucson show 2019 (Dave Varabioff)
22 Jan-02:15:06 Re: tucson show 2019 (Bob Harman)
21 Jan-23:16:19 Re: tucson show 2019 (Dave Varabioff)
21 Jan-23:15:11 Re: tucson show 2019 (Dave Varabioff)
21 Jan-23:13:51 Re: tucson show 2019 (Dave Varabioff)
21 Jan-23:12:35 Re: tucson show 2019 (Dave Varabioff)
21 Jan-22:58:33 Re: tucson show 2019 (Byron Anderson)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
49724


The time now is Jan 23, 2019 19:24

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
A mineralogical trip through the states of USA - Indiana
  Goto page Previous  1, 2, 3, 4, 5, 6
  Index -> A mineralogical trip through the states of USA
Like
237


View previous topic :: View next topic  
Author Message

Bob Harman




Joined: 06 Nov 2015
Posts: 454
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: May 27, 2018 14:47    Post subject: Re: A mineralogical trip through the states of USA - Indiana  

One of my 2 cases at the recent 2018 Cincinnati show. The show theme for minerals was calcite and its many crystal forms.


fullsizeoutput_292d.jpeg
 Mineral: Calcites
 Locality:
Indiana, USA
 Description:
Some of these examples have never been previously displayed. The first time these have all been displayed together in 1 case.
 Viewed:  1407 Time(s)

fullsizeoutput_292d.jpeg



fullsizeoutput_2930.jpeg
 Mineral: Calcites
 Locality:
Indiana, USA
 Description:
 Viewed:  1399 Time(s)

fullsizeoutput_2930.jpeg



fullsizeoutput_292f.jpeg
 Mineral: Calcites
 Locality:
Indiana, USA
 Description:
 Viewed:  1406 Time(s)

fullsizeoutput_292f.jpeg


Back to top
Reply to topic Reply with quote
Like
6
   

Bob Harman




Joined: 06 Nov 2015
Posts: 454
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jul 27, 2018 14:07    Post subject: Re: A mineralogical trip through the states of USA - Indiana  

Two examples of Aragonite sprays on Quartz with some corroding iron oxides (limonite). Both self collected about 10 years ago.


fullsizeoutput_2814.jpeg
 Mineral: Aragonite on Quartz
 Locality:
Monroe County, Indiana, USA
 Dimensions: the diverging aragonite sprays are 2 cm - 3 cm.
 Description:
 Viewed:  975 Time(s)

fullsizeoutput_2814.jpeg


Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 454
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 07, 2018 16:01    Post subject: Re: A mineralogical trip through the states of USA - Indiana  

Two more examples of Indiana Millerite from my collection. Both were self-collected about 2007.


fullsizeoutput_2cf.jpeg
 Mineral: Millerite on Quartz
 Locality:
Harrodsburg area, Clear Creek Township, Monroe County, Indiana, USA
 Dimensions: The millerite spray is 1.5 cm
 Description:
 Viewed:  873 Time(s)

fullsizeoutput_2cf.jpeg



fullsizeoutput_2a03.jpeg
 Mineral: Millerite nestled in Quartz
 Locality:
Harrodsburg area, Clear Creek Township, Monroe County, Indiana, USA
 Dimensions: The millerite spray is 2.0 cm
 Description:
 Viewed:  880 Time(s)

fullsizeoutput_2a03.jpeg


Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 454
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 10, 2018 20:56    Post subject: Re: A mineralogical trip through the states of USA - Indiana  

One of the so called hallmarks of the rock structure called a quartz geode is that the quartz crystal tips are suppose to point inward toward the center of the cavity. While this is generally true, a very small percentage have other appearances. These are a few; all self collected.


fullsizeoutput_246b.jpeg
 Mineral: Quartz
 Locality:
Indiana, USA
 Dimensions: Both are about 9 cm
 Description:
Quartz geodes
Both examples have interesting free form quartz areas within the cavity.
 Viewed:  813 Time(s)

fullsizeoutput_246b.jpeg



fullsizeoutput_1e34.jpeg
 Mineral: Quartz
 Locality:
Indiana, USA
 Dimensions: geode is 10.0 cm
 Description:
Quartz Geode
Several quartz crystals lying side by side. The largest crystal is a full 1.0 cm and doubly terminated. Very rare.
 Viewed:  811 Time(s)

fullsizeoutput_1e34.jpeg



fullsizeoutput_1e35.jpeg
 Locality:
Indiana, USA
 Dimensions: 1.0 cm doubly terminated crystal
 Description:
Quartz geode
Close up of above example.
 Viewed:  814 Time(s)

fullsizeoutput_1e35.jpeg


Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 454
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Dec 07, 2018 11:29    Post subject: Re: A mineralogical trip through the states of USA - Indiana  

Two unusual examples from my collection.

The first is a 15 cm x 15 cm geode showing a double cavity layer of druzy crystalline quartz tips atop blue-gray microcrystalline quartz (chalcedony).

The second example is an 11 cm x 7 cm oval and bi-septate geode with one cavity showing blue-gray microcrystalline quartz (chalcedony), while the adjacent cavity contains druzy clear quartz crystal tips.

As I understand crystal formation as related to crystal size, the faster the crystal forms, the smaller the crystal might be. So the formation of microcrystalline quartz (chalcedony) implies rapid formation. Interesting how this bi-septate example might have formed. BOB



fullsizeoutput_2b63.jpeg
 Mineral: Quartz with Quartz (variety chalcedony)
 Locality:
Indiana, USA
 Dimensions: 15 cm x 15 cm
 Description:
Crystalline quartz atop microcrystalline quartz (chalcedony)
Self collected about 10 years ago.
As seen , some patchy iron staining.
 Viewed:  409 Time(s)

fullsizeoutput_2b63.jpeg



fullsizeoutput_2b69.jpeg
 Mineral: Quartz with Quartz (variety chalcedony)
 Locality:
Indiana, USA
 Dimensions: 11 cm x 7 cm
 Description:
BI-septate example with druzy crystalline quartz and microcrystalline quartz (chalcedony)
Self collected about 12 years ago
 Viewed:  407 Time(s)

fullsizeoutput_2b69.jpeg


Back to top
Reply to topic Reply with quote
Like
1
   

Bob Harman




Joined: 06 Nov 2015
Posts: 454
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 07, 2019 18:46    Post subject: Re: A mineralogical trip through the states of USA - Indiana  

From Washington County Indiana come the largest geodes, not only in Indiana, but probably in the US Midwest. Also found are many large colorful and very photogenic examples with collectible calcites. I have shown several in previous posts and here are 2 more. BOB


fullsizeoutput_2c24.jpeg
 Mineral: Calcite on Dolomite
 Locality:
Washington County, Indiana, USA
 Dimensions: Oval example 16 cm x 12 cm. Calcites up to 1.3 cm
 Description:
Self collected in 2013
 Viewed:  239 Time(s)

fullsizeoutput_2c24.jpeg



fullsizeoutput_2c20.jpeg
 Mineral: Calcite on Dolomite
 Locality:
Washington County, Indiana, USA
 Dimensions: Oval geode is 20 cm. Calcites are up to 2 cm
 Description:
Self collected in 2015.Large cabinet sized example, well displayed and very photogenic.
 Viewed:  241 Time(s)

fullsizeoutput_2c20.jpeg


Back to top
Reply to topic Reply with quote
Like
1
   

Bob Harman




Joined: 06 Nov 2015
Posts: 454
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 10, 2019 19:48    Post subject: Re: A mineralogical trip through the states of USA - Indiana  

A recent quality find of a Baryte on Quartz


fullsizeoutput_2c33.jpeg
 Mineral: Baryte on Quartz
 Locality:
Mission Valley Ravine, Monroe County, Indiana, USA
 Dimensions: nicely terminated 4.3 cm Baryte in 11 cm Quartz geode
 Description:
Self collected about 2 years ago by a collector friend of mine.
 Viewed:  135 Time(s)

fullsizeoutput_2c33.jpeg


Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> A mineralogical trip through the states of USA   All times are GMT - 5 Hours
Page 6 of 6
  Goto page Previous  1, 2, 3, 4, 5, 6  

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2019


Powered by FMF