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Bismuthinite : Bi2S3

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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:

1Fit image to screen
2Fill screen with image
5Display at full resolution
<Make background darker
>Make background lighter
spaceHide/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

1Fit image to screen
2Fill screen with image
3Switch to 3D display of stereo pair
4Switch left/right images in 3D mode
5Display at full resolution
<, >Make background darker/lighter
H or ?Show/hide this help page
PPlay/Pause Video or Animation
[, ]Backwards/forwards one frame (Animation only)
spaceHide/dim titles and buttons
up arrowShow information box
down arrowHide information box
left arrowPrevious child photo
right arrowNext child photo
shift + left arrowPrevious image on the page
shift + right arrowNext image on the page


Copyright © Maggie Wilson
 
 
 
 
 
minID: PD9-U5U

Bismuthinite : Bi2S3

Copyright © Maggie Wilson  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 2.5 cm x 2.5 cm x 1.5 cm

subsequent to EDS analysis, XRD reveals this is bismuthinite

This photo has been shown 224 times
Photo added:20th Aug 2014
Dimensions:708x800px (0.57 megapixels)
Camera:CANON PowerShot S3 IS

Data Identifiers

Mindat Photo ID:631622 📋 (quote this with any query about this photo)
Long-form Identifier:mindat:1:4:631622:5 📋
GUID:f4f4dd1c-3afb-4f8d-b17a-1576bec8d7cf 📋
Specimen MinIDPD9-U5U (note: this is not unique to this photo, it is unique to the specimen)

Other Views - click to switch

Discuss this Photo

PhotosGalenobismutite - Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada

20th Aug 2014 01:24 UTCJason Duke

Hi Maggie,

Are there any key visual characteristics that distinguish Galenobismutite from native bismuth, galena or typical cobalt/nickel arsenides.

Cheers,

Jason

20th Aug 2014 01:30 UTCReiner Mielke Expert

The main characteristics are it is soft, black to dark grey with a blue tarnish, laminar structure, no cubic cleavage, and bubbles strongly dissolving quickly in concentrated nitric acid ( just like calcite).

20th Aug 2014 07:54 UTCUwe Kolitsch Manager

Note that EDS analysis is insufficient to distinguish galenobismutite from other Pb-Bi-sulphides.

20th Aug 2014 15:05 UTCReiner Mielke Expert

Hello Uwe,


Yes of course but the other properties nail it down unless you are suggesting it might be cannizzarite or xilingolite? It is not cosalite or aschamalmite since I tested them in nitric acid and they do not react like this. I don't have samples of cannizzarite or xilingolite so I could not compare those. It is not likely cannizzarite but xilingolite would be a possibility.Does xilingolite tarnish blue? If someone has a sample of xilingolite maybe they could test it with conc. room temp nitric acid and let me know how it reacts ( or send me a tiny piece). If it reacts the same as galenobismutite I will get my sample XRDed. I sure hope it is xilingolite that would be a first for Canada!

20th Aug 2014 16:44 UTCTravis Olds Expert

Reiner,


You're in luck! Just yesterday I was looking at some Pb-Bi-S phases from a Au prospect in Upper Michigan I found a few years back, and I have a sample of (single xl XRD confirmed) xilingolite to test. Will forward you the HNO3 results later. Even if this grain reacts violently, I still wouldn't be convinced that this test can distinguish between the two... So feel free to send a grain or two, and I can run a quick single xl matrix to get a unit cell.


Besides that, I've noticed xilingolite (at least from this MI prospect) seems to have smoother fracture surfaces than galenobismutite. The only real way to distinguish the two IMO is by structure analysis...


Travis

20th Aug 2014 16:58 UTCReiner Mielke Expert

Hello Travis,


I guess the best way to find out if the nitric acid test works is to get my stuff X-rayed and your sample tested with acid. I'll send you a sample this weekend. If Michigan has some xilingolite then there is no reason Ontario can't LOL. Thanks


Reiner

20th Aug 2014 17:00 UTCTravis Olds Expert

Reiner,


The MI xilingolite effervesces strongly in 70% HNO3.


Travis

20th Aug 2014 17:17 UTCReiner Mielke Expert

Thanks Travis,


Looks like XRD is in order.

20th Aug 2014 17:21 UTCTravis Olds Expert

Reiner,


Definitely; a confirmed MI galenobismutite reacts similarly, if not more vigorously than xilingolite. There is no obvious difference.


Travis

2nd Sep 2014 00:34 UTCReiner Mielke Expert

Well it looks like the nitric acid test is not reliable, Travis XRDed it and it showed bismuthinite! Damn bismuthinite has done it to me again, seems lately everything is coming up bismuthinite LOL. I must say it sure has a lot of different appearances in Cobalt, first time I have seen it with a bright blue tarnish.

8th Sep 2014 16:12 UTCPeter Haas

Reiner Mielke Wrote:

-------------------------------------------------------

> Damn bismuthinite has done it to me

> again, seems lately everything is coming up

> bismuthinite LOL.


Why not ask a Chinese dealer to swap them for some Yaogangxian material ? What they notoriously trade as bismuthinite is usually something else ... :-D
 
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