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Newest topics and users posts
25 May-07:49:44 Re: the mim museum in beirut, lebanon (Bob Morgan)
25 May-07:12:18 Re: es -semara chalcedony (Amir Akhavan)
25 May-06:21:18 Re: red quartz (Mathias)
25 May-05:12:50 Re: the mim museum in beirut, lebanon (Tobi)
25 May-05:06:33 Re: red quartz (Tobi)
25 May-02:59:02 Red quartz (Mathias)
24 May-20:11:45 Es -semara chalcedony (Amir Akhavan)
24 May-01:32:57 Re: the mim museum in beirut, lebanon (Mim Museum)
24 May-00:13:58 Re: collection of volkmar stingl (Volkmar Stingl)
23 May-16:50:42 The mizunaka collection - quartz (Am Mizunaka)
23 May-10:35:25 Re: don lum collection (Don Lum)
23 May-10:29:14 Re: more label translation (Peter Lemkin)
23 May-08:35:32 Re: collection of michael shaw (Michael Shaw)
23 May-03:49:25 Re: more label translation (Tobi)
23 May-03:17:33 Re: don lum collection (Carles Millan)
22 May-23:22:42 Re: don lum collection (Don Lum)
22 May-18:50:58 Boldut mine - silvia's collection (Silvia)
22 May-13:15:43 Re: more label translation (John S. White)
22 May-13:13:02 More label translation (Jesse Fisher)
22 May-03:40:56 The mizunaka collection - fluorite (Am Mizunaka)
22 May-02:09:44 Re: the mim museum in beirut, lebanon (Mim Museum)
21 May-20:19:13 Re: the mim museum in beirut, lebanon (Silvia)
21 May-19:11:50 Re: presentation of new members - joão luz from lisboa, portugal (João Luz)
21 May-19:07:30 Re: is this a ruby? (João Luz)
21 May-07:25:51 Re: need help identifying this rock (Roger Warin)

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  Topic: Quartz ID
Bob Harman

Replies: 7
Views: 1103

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Jan 21, 2022 03:06   Subject: Re: Quartz ID
Nice full cabinet size example!

The dominant crystals are big enough for my definition of Quartz, var rock crystal.
The patchy yellowish areas, I still think are iron oxide stains.

Welcome to ...
  Topic: Quartz ID
Bob Harman

Replies: 7
Views: 1103

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Jan 21, 2022 00:55   Subject: Re: Quartz ID
It is unfortunate that you don't have a locality as Quartz like you show is sooooo common, it could be from many localities. It might help if you give the specimen measurements.

The example on ...
  Topic: Tucson Shows 2022
Bob Harman

Replies: 95
Views: 26171

PostForum: News about shows   Posted: Jan 15, 2022 22:29   Subject: Re: Tucson Shows 2022 - It's starting!!
I went back to the "Tucson 2020" thread and reviewed the postings, including mine, as I attended that show.
Bob K's postings of that show were great so I am sure his postings of the upcomi ...
  Topic: Alleged 'silvers' from Udokan?
Bob Harman

Replies: 13
Views: 3598

PostForum: Off-Topic and Introductions   Posted: Jan 15, 2022 18:40   Subject: Re: Alleged 'silvers' from Udokan?
Hi Alfredo and thanks for your input.

My philosophy of focused collecting started when I was about 10 yo. when I started collecting stamps.
Coincidentally, my Dad's business partner was an advanc ...
  Topic: Alleged 'silvers' from Udokan?
Bob Harman

Replies: 13
Views: 3598

PostForum: Off-Topic and Introductions   Posted: Jan 15, 2022 16:52   Subject: Re: Alleged 'silvers' from Udokan?
Jordi, This is an interesting thread with 2 important take-aways for me.

The first is that since these examples were originally on sale as natural mineral specimens and were subsequently analyzed a ...
  Topic: A mineralogical trip through the states of USA - Indiana
Bob Harman

Replies: 139
Views: 135542

PostForum: A mineralogical trip through the states of USA   Posted: Jan 04, 2022 19:14   Subject: Re: A mineralogical trip through the states of USA - Indiana
Bob, Here is another of my pseudocubic Quartz specimens.

Aragonite or Kaolinite coats the Quartz crystal tips. In this rather small cavity, there also is Smoky Quartz crystal groupings, makin ...
  Topic: A mineralogical trip through the states of USA - Indiana
Bob Harman

Replies: 139
Views: 135542

PostForum: A mineralogical trip through the states of USA   Posted: Jan 04, 2022 17:44   Subject: Re: A mineralogical trip through the states of USA - Indiana
HI Bob and Happy New Year to you!

If your question is referring to the so called pseudocubic variant of the druzy quartz crystal tips discussed in a February 2018 article in Rock & Gem periodi ...
  Topic: A mineralogical trip through the states of USA - Indiana
Bob Harman

Replies: 139
Views: 135542

PostForum: A mineralogical trip through the states of USA   Posted: Jan 04, 2022 03:49   Subject: Re: A mineralogical trip through the states of USA - Indiana
As most field collectors know, iron oxides are so pervasive and common that many many collected mineral specimens have some degree of rusty iron staining. Trying to clean and improve the mineral speci ...
  Topic: A mineralogical trip through the states of USA - Indiana
Bob Harman

Replies: 139
Views: 135542

PostForum: A mineralogical trip through the states of USA   Posted: Jan 03, 2022 18:43   Subject: Re: A mineralogical trip through the states of USA - Indiana
This posting will be some info on the Calcite found in the Berry Materials Quarry vs. the Calcite found in the Meshberger Stone Quarry.

Indiana has numerous Calcite locations, both contained within ...
  Topic: A mineralogical trip through the states of USA - Indiana
Bob Harman

Replies: 139
Views: 135542

PostForum: A mineralogical trip through the states of USA   Posted: Jan 03, 2022 14:51   Subject: Re: A mineralogical trip through the states of USA - Indiana
Hi All and a Happy New Year 2022 to everyone!

After a 6 month hiatus I am returning to the wonderful forum.

During the past 6 months my personal computer and those many others associated with o ...
  Topic: Don Lum Collection
Bob Harman

Replies: 1883
Views: 1592373

PostForum: Collection photos and Collector's page   Posted: Jan 03, 2022 13:49   Subject: Re: Don Lum Collection
WISHING EVERYONE A HAPPY AND HEALTHY 2022 !

Hi Don.... and Happy New Year to you as well!

While I think your specimen of Calcite with Chalcopyrite is aesthetic and interesting, I have to serious ...
  Topic: Cybersecurity, current hi tech hacking, and being a registered user of this forum
Bob Harman

Replies: 1
Views: 1365

PostForum: Off-Topic and Introductions   Posted: Jul 06, 2021 05:35   Subject: Cybersecurity, current hi tech hacking, and being a registered user of this forum
Because of all the recent cyberattacks, my family's security advisors have strongly suggested unregistering and logging out from multiple non-essential websites.

Being '"logged in" or sim ...
  Topic: Join us to dig a giant Amethyst geode
Bob Harman

Replies: 38
Views: 194968

PostForum: Exceptional finds   Posted: Jul 05, 2021 17:02   Subject: Re: Join us to dig a giant Amethyst geode
Thru out this old thread everyone called the extracted very large example a "geode". Of course it is not a true geode, as all the Brazilian examples from Rio Grande do Sul and those from Art ...
  Topic: Favourite Barytes?
Bob Harman

Replies: 31
Views: 31440

PostForum: Favourite Minerals   Posted: Jul 04, 2021 09:38   Subject: Re: Favourite Barytes?
Another interesting large cabinet size example.

These specimens are well received in my display cases at the regional shows. The example's sizes and coming from regional or local areas make the g ...
  Topic: What is it?
Bob Harman

Replies: 4
Views: 1794

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Jul 02, 2021 17:57   Subject: Re: What is it?
So what you have is either a true geode or geode like structure composed of the purple quartz variety known as amethyst.

While this forum does not give valuations, in general, yours looks to ...
  Topic: Favourite Barytes?
Bob Harman

Replies: 31
Views: 31440

PostForum: Favourite Minerals   Posted: Jun 30, 2021 15:01   Subject: Re: Favourite Barytes?
Another classic expression of an Indiana baryte on quartz from the Lake Monroe (Monroe Reservoir) area of Monroe County.
Well displayed, this 14.5 cm x 14.5 cm example shows a lustrous 3.3 cm term ...
  Topic: Favourite Barytes?
Bob Harman

Replies: 31
Views: 31440

PostForum: Favourite Minerals   Posted: Jun 27, 2021 12:32   Subject: Re: Favourite Barytes?
For those who collect smaller specimens or like examples of crystal groupings culled from larger specimens, is this radiating group of lustrous and transparent baryte crystals. Most of the crystals ...
  Topic: Favourite Barytes?
Bob Harman

Replies: 31
Views: 31440

PostForum: Favourite Minerals   Posted: Jun 23, 2021 15:13   Subject: Re: Favourite Barytes?
I believe I have mentioned in the past that Indiana baryte crystals always are found in geodes and originate in only the 2 counties of Monroe and Washington. If you are ever offered an Indiana baryte, ...
  Topic: Favourite Barytes?
Bob Harman

Replies: 31
Views: 31440

PostForum: Favourite Minerals   Posted: Jun 23, 2021 13:44   Subject: Re: Favourite Barytes?
Worthy of any baryte display case is this self-collected example from the Harrodsburg road cuts in Monroe County Indiana
.
The 5 cm white tipped doubly terminated baryte crystal is part of a paralle ...
  Topic: What kind of mineral is it ?
Bob Harman

Replies: 4
Views: 1441

PostForum: What is it? - Where is it from?   Posted: Jun 23, 2021 08:54   Subject: Re: What kind of mineral is it ?
This exact same specimen has been posted for identification on the MinDat website.

To you and all responders on this site, please see the responses there. Bob
 
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