Dallas Mineral Collecting Symposium 2020
How to use the mindat.org media viewer
Click/touch this help panel to close it.
Welcome to the mindat.org media viewer. Here is a quick guide to some of the options available to you. Different controls are available depending on the type of media being shown (photo, video, animation, 3d image)
Controls - all media types
Zoom in and out of media using your mousewheel or with a two-finger 'resize' action on a touch device.
Use the mouse or your finger to drag the image or the view area of the image around the screen.
< and > at the left and right hand side of the screen move forwards and backwards for the other images associated with the media you selected. Usually this is used for previous/next photo in a gallery, in an article or in search results. Keyboard shortcuts: use shift + the left and right arrow keys.
< and > in the bottom center are used for switching between the photos of the same specimen. Keyboard shortcuts: use the left and right arrow keys.
> in the bottom center, raises the information box giving details and further options for the media, < at the top of this box then hides it. Keyboard shortcuts: use the up and down arrow keys.
? opens this help window. Keyboard shortcuts: use the H key or the ? key.
Other keyboard shortcuts:
| 1 | Fit image to screen |
| 2 | Fill screen with image |
| 5 | Display at full resolution |
| < | Make background darker |
| > | Make background lighter |
| space | Hide/dim titles and buttons |
Scalebar
If the field of view (FOV) is specified for the photo, the scalebar appears in the left bottom corner of the viewer. The scalebar is draggable and resizeable. Drag the right edge to resize it. Double click will reset the scalebar to it's default size and position. If the scalebar is in default position, double click will make it circular.
Controls - Video
Video files have a standard set of video controls: 
- Reset to start, 
- Skip back, 
- Play, 
- Pause, 
- Skip forwards. Keyboard shortcuts: You can stop/start video play with the P key.
Controls - Animation (Spin Rotation)
Animation (usually 360 degree spin rotations) have their own controls: 
- enable spin mode. Note that while images are loading this option will not be available but will be automatically activated when the animation has loaded. Once active you can spin the image/change the animation by moving your mouse or finger on the image left/right or by pressing the [ or ] keys.
The 
button switches to move mode so that you can use your mouse/fingers to move the image around the screen as with other media types.
The button, or the P key will start playing the animation directly, you can interrupt this by using the mouse or finger on the image to regain manual movement control.
Controls - 3D Stereoscopic images
If a stereoscopic 3D image is opened in the viewer, the 3D button appears in the bottom right corner giving access to "3D settings" menu.
The 3D images can be viewed in several ways:
- without any special equipment using cross-eyed or parallel-eyed method
- with stereoscope
- with anaglyph glasses.
- on a suitable 3D TV or monitor (passive 3D system)
For details about 3D refer to: Mindat manuals: Mindat Media Viewer: 3D
To enable/disable 3D stereo display of a compatible stereo pair image press the 3 key. If the left/right images are reversed on your display (this often happens in full-screen mode) press the 4 key to reverse them.
Controls - photo comparison mode
If a photo with activated comparison mode is opened in the viewer, the
button appears in the bottom right corner giving access to "Comparison mode settings" menu.
Several layouts are supported: slider and side by-side comparison with up to 6 photos shown synchronously on the screen. On each of the compared photos a view selector is placed, e.g.: Longwave UV ▼. It shows the name of currently selected view and allows to select a view for each placeholder.
Summary of all keyboard shortcuts
| 1 | Fit image to screen |
| 2 | Fill screen with image |
| 3 | Switch to 3D display of stereo pair |
| 4 | Switch left/right images in 3D mode |
| 5 | Display at full resolution |
| <, > | Make background darker/lighter |
| H or ? | Show/hide this help page |
| P | Play/Pause Video or Animation |
| [, ] | Backwards/forwards one frame (Animation only) |
| space | Hide/dim titles and buttons |
| up arrow | Show information box |
| down arrow | Hide information box |
| left arrow | Previous child photo |
| right arrow | Next child photo |
| shift + left arrow | Previous image on the page |
| shift + right arrow | Next image on the page |
Dallas Mineral Collecting Symposium 2020
Data Identifiers
| Mindat Photo ID: | 1071580 (quote this with any query about this photo) |
|---|---|
| Long-form Identifier: | mindat:1:4:1071580:7 |
| GUID: | e5b5ece3-fbc9-47f3-a9db-458691011d49 |
A historic wulfenite -
A significant USA thumbnail specimen from the most important and famous -- dare we say legendary -- pocket....the Ed Over Pocket of 1938. Firstly, this is a sharp, gemmy, vibrantly colored Red Cloud wulfenite of the BEST color ever found, collected by Ed Over in 1938 from the famous "Ed Over pocket" that went to the Smithsonian and other major museums. As a bonus, it also was the prize wulfenite thumbnail in the collection of Bill Panczner, author of the book Minerals of Mexico and a longtime thumbnail exhibitor since the 1960s (the collection won Nationals in 1969). When Bill was appointed curator at the Arizona Sonora Desert Museum in Tucson, he started a sale for deaccessions and duplicates from the museum's collections and field trips. This piece, from his and his wife's own collection at the time, was featured on the poster for that opening sale in the 1960s. Bill (now in his early 80s) wrote me: Rob, the poster photograph I sent you was made by the Museum's printing company and were only 24 made. It was about 12" x 18" in size and was put in several of the store windows, the university, and at the chamber office. The only copy I have which just came back to me after Sharon's passing was in storage and has undergone a color shift due to the heat in storage.
Bill retired as curator of the Arizona Sonora Desert Museum in about 1980 and moved away from Tucson, and this award-winning thumbnail collection has not been seen in 40 years since (it was recently purchased by Arkenstone - stay tuned for more!).
There is quite a story to the specimen, which follows in his own words, "This wulfenite specimen has a lot of history!!! It was in the collection of Smithsonian and was collected in 1938 by Ed Over and went into the Art Montgomery collection, which is how Smithsonian got the specimen. When Susie Davis sold and traded her collection to the Smithsonian, she got this wulfenite for her thumbnail collection. She later gave it to my wife Sharon who was working for her (and collected thumbnails) as a gift!!! I used it in the first post for the Mineral Sales for the Desert Museum. A fantastic thumbnail, with great provenance."
Donated by Arkenstone, Photos by Jingnan Zhang.
https://www.mineralauctions.com/items/wulfenite-tn-from-ed-over-1938-museum-poster-piece-ex-bill-panczner-85497
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