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Oct 2019⚠63 imagesRe: COLLECTING THE CHEMICAL ELEMENTSReply from Bart Cannon in Education.Do you remember Texasite ? A "new" natural praesodymium sulfate, discovered and characterized by Wilson Crook in the late 1970s. The pale green texasite crystals were traded in gel-caps, and sold for $10 to $75 dollars. It became known that Wilson synthesized the ...
Oct 2019Re: New Mindat PageReply from Bart Cannon in General.You are NOT alone. I am Legacy Man. I still have a working computer system for data analysis that uses DOS 6.3. I hate keeping up with Windows. Three of my analysis packages require Windows XP, and I am forced to keep using them. I actually like XP, and it ...
Oct 2019Re: Mindat Help PageReply from Bart Cannon in General.Thank you !
Oct 2019Mindat Help PagePosted by Bart Cannon in General.My second dumb question of the week. Is there a Mindat help page ? I can't even figure out how to send a DM, and is that the same as a PM ?
Oct 2019Re: Poll - any micromounters using optical ID techniques / PLM?Reply from Bart Cannon in General.The ROM-11 is the first scope shown in that link. I've been trying to find an inexpensive ore microscope for the people in my Ore Microscopy Facebook group. I've been frustrated for years that people will spend large sums of money for specimens, but are not willing to spend a few ...
Oct 2019Re: A Poor Man’s Mineral MicroscopeReply from Bart Cannon to an article.Can the Andonstar get a complete full frame image of a penny?Also. How would adjust the vertical axis of the x-y milling table ? Or do you do that with the camera vertical movement ?
Oct 2019Re: Access to my Private MessagesReply from Bart Cannon in General.Thank you !
Oct 2019Re: Poll - any micromounters using optical ID techniques / PLM?Reply from Bart Cannon in General.It is model ROM-11 "Led" should have been typed LTD.
Oct 2019Re: schorl reference standardReply from Bart Cannon in General.It's definitely your package. I couldn't find a return address, but customs sticker shows shows a small signature which I couldn't make out. The June sample was actually from Matt Cirrani. I can't access my PMs on Mindat. I posted a question about how to open up my ...
Oct 2019Access to my Private MessagesPosted by Bart Cannon in General.I can't find the route to the private messages to me. I had no trouble in the past, but I see no way to get there at the moment.
Oct 2019Re: schorl reference standardReply from Bart Cannon in General.Peter,I received and analyzed the tourmalines you sent me in late June. I have not produced the edited spectra, but they were close to schorl.Yesterday, Oct 4 I received a suite of British tourmalines, but there was no indication of who the sender was. Could it have been you ?
Oct 2019⚠63 imagesRe: COLLECTING THE CHEMICAL ELEMENTSReply from Bart Cannon in Education.They are solid sulphur showing some open crystal lined spaces. They must be at least 70 years old.I forgot to ask if you have pondered why melting sulphur never results in a translucent or transparent block. Have you tried very slow cooling ?
Oct 2019Re: Poll - any micromounters using optical ID techniques / PLM?Reply from Bart Cannon in General.Here is a bargain ore microsocope. $347 from India. I have one. It works. It has a bertrand lens.I think the company is named Radical Scientific Equipments Pvt.Led. They are in Ambala Cantt, India. I can't find their web link in the brochures.
Oct 2019⚠63 imagesRe: COLLECTING THE CHEMICAL ELEMENTSReply from Bart Cannon in Education.I have some sulphur "candles". They are antique. You can light the wick. They are 1.5 x 1.5 inches square. and the company name is cast into the top of the candle. B and B Sulphur Fumes.I can't remember what the intended purpose of these is. I found ...
Oct 2019Re: Peacock Mine, Leadore Mining District, Lemhi Co., Idaho, USAReply from Bart Cannon in Localities.Many people have looked for this deposit without success.I think it must be an Ed Mcdole locality. Ed spent quite a bit of time field collecting in Lemhi County. He discovered a fabulous ferrimolybdite locality there. Inch long free standing plumes. I ...
Sep 2019⚠63 imagesRe: COLLECTING THE CHEMICAL ELEMENTSReply from Bart Cannon in Education.There are many posts on Facebook from suppliers who are all selling the same display block of the elements.Very nice water clear casting showing most non gaseous elements. Identification is provided with a periodic table format.Watch out, though. I ordered one and I was sent and billed ...
Sep 2019Re: Cleaning Cinnabar With Iron-OutReply from Bart Cannon in General.This is the only I've any trouble with Iron Out.Mn oxide stains generally are removed in any kind of acid.There at least three good books on the subject of mineral cleaning.
Sep 2019Re: Cleaning Cinnabar With Iron-OutReply from Bart Cannon in General.My cinnabar consists of 3 to 8 mm botyroids with a fine druzy / granular surface. There are no lustrous crystal faces.
Sep 2019⚠26 imagesRe: Goldfield Nevada. Mineral Specimens of the Historic Mining District.Reply from Bart Cannon in General.Goldfield is the namesake for the ore mineralization model based around quartz / alunite hydrothermal alteration. Is alunite easy to find on the dumps ?
Aug 2019Re: Cleaning Cinnabar With Iron-OutReply from Bart Cannon in General.One thing I didn't try is to wash and soak with clean water. One peculiar reaction was that after rinsing the piece, the epsomite solution became lightly rust colored. Maybe residual Iron Out.The cardinal rule has remained the same for seventy years. Always experiment with a minor ...
Aug 2019Re: Cleaning Cinnabar With Iron-OutReply from Bart Cannon in General.Thank you for the comment. I'm pretty certain the black coating is not native mercury.I lightly torched a fragment long enough to get it hot, but not melt. No change.
Aug 2019⚠26 imagesRe: Goldfield Nevada. Mineral Specimens of the Historic Mining District.Reply from Bart Cannon in General.I believe that the first piece in the series would assay at hundreds of ounces of gold per ton. 2 ounces per ton is way low.
Sep 2019Cleaning Cinnabar With Iron-OutPosted by Bart Cannon in General.Don't do it. I have a wonderful 4"x 6" botyroidal cinnabar from John Day, Oregon. I cleaned it decades ago in warm oxalic. I decided to remove the residual iron hyrdroxides with Iron Out.Within 10 minutes the cinnabar transformed from bright red to black. Now it ...
Jul 2019Zekzerite 2019 Seattle Mineral MarketPosted by Bart Cannon in Lost and Stolen Specimens.A very nice Zektzerite from Washington Pass, WA has been missing since breakdown at the Seattle Mineral Market. It was last seen during pack up Sunday May 19, 2019. The specimen is slightly larger than one inch in diameter.
Jul 2019Re: The coordinates for the Iron Hill carbonatite complex in Colorado are incorrectReply from Bart Cannon in Improving Mindat.org.I have about 30 pounds of Iron Hill carbonatite collected in 1983. I've intended to determine what minerals are present from about 7 prospect pits I looked at. Anything you've been wondering about from there ?
Earlier that day I tried to find an Anatase locality to the West of Iron Hill. The ...
Jun 2019Re: Raman Open Database: first interconnected Raman–X-ray diffraction open-access resource for material identificationReply from Bart Cannon in General.Ule,
I found the ROD search page, but I can't obtain any data on anything. Is an ROD ID number more than just the name of the mineral ?
Can you outline the steps in use of the ROD ?
Thank you.
Bart Cannon
Jun 2019Re: schorl reference standardReply from Bart Cannon in General.The ARL SEMQ is running. I bought a new "state of the art" Amptek SDD detector for it. Excellent spectra. Lightest element easily detectable is fluorine.
My JEOL 8600 is still in the installation process.
I'll provide free spectra for a limited number of any tourmalines from any ...
Jun 2019Re: schorl reference standardReply from Bart Cannon in General.George Rossman would be good to contact about this. I'm aware of the homogeneity problem. I will be paying attention to that.
I actually have a small sideline business of supplying electron probe standards, and reference materials.
Jun 2019Re: schorl reference standardReply from Bart Cannon in General.I'd be interested in any tourmaline from any locality, but at the moment I'm looking for the blackest, black schorl. I can provide spectra for any specimens from localities of well verified origin.
Nov 2019schorl reference standardPosted by Bart Cannon in General.I am creating a tourmaline reference mount for EMPA. I'd like to hear suggestions about good, confirmed schorl localities with consistent, and accurate analyses. My new SDD x-ray detector is very good with all x-ray detection except Li, B and Be. I'm working on a windowless detector which will ...
Jun 2019Re: x-ray diffraction. I need a name.Reply from Bart Cannon in General.Too small for my powder diffractometer, but I'll be getting a gandolfi camera for single crystal work. In the indefinite future.
Feb 2019Re: Hot pink inclusion in quartzReply from Bart Cannon in General.In about 1970 Paul Desautels did a sight ID on the Denny Mtn. scepter inclusions. Red hematite scales with acicular, dark lepidocrocite needles. It has never been proven. Electron probe work on tiny inclusions in quartz are difficult. This may be a job for Raman spectroscopy.
Dec 2018Re: Where to get Denny Mountain, Washington sceptersReply from Bart Cannon in General.Gary Maykut of Seattle, and Lew Landers of Highpoint have the largest selection of upper Denny Creek amethyst scepters. It would be challenging to get them to part with any at affordable prices.
Nov 2018Re: Kidney and Gallstone photosReply from Bart Cannon in General.The petrography of kidney stones and bladder stones has become a specialty research area. Lee Dubay of BioOptics World has written a summary of the techniques. Some layers are fluorescent, and it has been determined that the formation is cyclic. The new layers sometimes dissolve and are then ...
Nov 2018Re: Another geological puzzle.Reply from Bart Cannon in General.Are you absolutely certain it is a limestone ? I suppose that there could be a limestone captured turbidite.
May 2018Seattle Mineral MarketPosted by Bart Cannon in Mineral Shows.Seattle Mineral Market, May 26, 27, 2018. Held at the Lake City Community Center 12531 28th Avenue NE, Seattle, WA 98125. This is the 14th annual show featuring 40 mineral specimen dealers, many of which are NW field collectors. Free admission, free parking. Contact Bart Cannon ...
Apr 2018Re: Palladian Copper, does it exist?Reply from Bart Cannon in General.Rob, I'm pretty sure the palladian copper came from the J and M Reef in the Stillwater complex. Lloyd Twaite's material was a concentrator product which consisted of natural native copper flakes which had embedded iso-ferro platinum. I was always suspicious of that material. I felt it was cross ...
Apr 2018Re: Petr Cerny past away on April 7th 2018Reply from Bart Cannon in General.Cernyite was discovered in one of the Black Hills pegmatites. I imagine the type specimen came from NW collector Noble Witt. I think he had the World's supply in his basement. I only have a few pieces. I hope his relatives did not just dump his minerals after Noble's death. The same goes for ...
Feb 2018Re: Climate ClassificationsReply from Bart Cannon in General.Here is a book that will help one understand weathering and subsequent mineralogy.
"Oxide Zone Geochemistry" P.A. Williams, University of Wales, Cardiff. Ellis Horwood publisher 1990.
Dec 2017Re: Polished Ore Sections for Studies?Reply from Bart Cannon in Techniques for Collectors.I've had an electron probe since 1983. I've tens of thousands of polished sections. I also have a very large collection various sulfide ores. I'm sure I can help. Do you have an ore microscope?
Jan 2018Re: Microscope for mineral studyReply from Bart Cannon in General.Try Amscope.com They have a stereo microscope for about $125. Replaced the lamp with a halogen reflector and bulbs. It has a two inch turret objective like the one in the photo. The image is crisp and nearly as good and Bausch Lomb Stereozoom 7. Put a tungesten ring light on the amscope and its ...
Dec 2017Re: Looking for Raw Bauxite Ore for Educational PurposesReply from Bart Cannon in General.I have about 50 pounds of old Arkansas, bauxite, Many colors, many patters.
Mar 2018Re: Desert Inn, Tucson, 1970s-1980sReply from Bart Cannon in General.The photo is mainly of the Travel Lodge. I have a 9 x 12 color photo with the D.I. as the subject. I'll find it and scan it. The late 70s and early 80s Tucson show were far and away to best days. I was having fun all day and night,
Apr 2017Re: Mineralogical Infrared Spectroscopy ConfigurationReply from Bart Cannon in General.What advantages does IR spectroscopy hold over Raman spectroscopy ? My electron probes have optical Cassegrain lenses in which the electron beam is coaxial with with those lenses. The optical lenses allow me to see cathodoluminscence in real colors in real time. I have an Ocean Optics UV-VIS-NIR ...
Apr 2017Re: Bill PinchReply from Bart Cannon in General.Bill was in first or second place among my favorite mineral collectors / customers. He made a point of coming to my room at the Desert Inn first. Not as much for the minerals themselves as for the new field collected offerings I had. He was a collector of minerals and localities. As good as it ...
Mar 2017Re: non explosive demolition agents for mining mineralsReply from Bart Cannon in General.Over the last five decades I've tried every method of rock breaking other than capillary wicking expansion of wood dowels, and fire. Expansive mortors work, but, as has been mentioned, they take at least 8 hours to start cracking. They do a beautiful job on the trimming of large specimens. I ...
Jan 2017Bargain Electron MicroprobePosted by Bart Cannon in General.My friend Pete McSwiggen intends to sell his JEOL 8600 Superprobe for $ 15 K. Though a new owner might be competition for me, I am compelled to find a home for this instrument since he will part it out if he doesn't sell it. It has modern hardware including 5 WDS spectrometers, an EDS detector ...
Jan 2017Re: Searchable Mineral DatabaseReply from Bart Cannon in General.Thanks, Alfredo. I'm delighted. That works fine. Apparently aguilarite is back and approved.
Jan 2017Searchable Mineral DatabasePosted by Bart Cannon in General.Is there an up to date mineral species database which allows searching by composition match ? Some Years ago I depended upon Nichols and Nickels MDI Mineral program. I believe it was last sold by Materials Database. Searches could include most any field such as XRD, composition with exclusion of ...
Jan 2017Seattle Mineral Market May 20,21Posted by Bart Cannon in Mineral Shows.The eleventh Seattle Mineral Market will occur May 20,21, 2017 at the Lake City Community Center, 12531 28th Ave NE in Seattle. Mineral specimens featured. 30 dealers. Free admission.
