Examining the samples in the field - a photo on Flickriver

            But before sending the samples to the laboratory, I did a preliminary examination with a binocular microscope to see if there was any unusual minerals present including gold flakes.  Gold flakes or nuggets are easy to spot; they are bright yellow – as gold should be – untarnished, usually rounded and flat, soft and malleable (you can easily scratch them with a needle).   They are easily distinguishable from pyrite also known as fool's gold which is always tarnished and much harder than gold (you cannot scratch pyrite with a needle).  Tin (in the form of the minerals cassiterite or scheelite) is more difficult to recognise and is best detected in the laboratory.  Uranium is rarely seen in surficial deposits because its minerals are easily oxidized and dissolve quickly in water.
   

Taken in: Canada / Northwest Territories (show map)

Taken on: July 14, 1980

Tags:

MacInnis

Lake

Northwest Territories heavy

minerals panning Californian

pan geology collecting samples cassiterite gold native

gold flakes nuggets beach

sand

microscopic

examination

microscope

binocular

geochemistry

mineralogy

geologist « less

Sets appears in: • MacInnis Lake, NWT, summer of 1980

Groups appears in: • Earth Science Teaching Resource

Camera: Nikon SUPER COOLSCAN 5000 ED (more info) (hide info)

Camera:	Nikon SUPER COOLSCAN 5000 ED
Color Space:	sRGB
Software:	ACDSee Pro 6
Show full info

Stats: 918 views / 1 comment

go back

close tools panel

Badge creator

Use Flickriver Badge Creator to create a badge linking to your photos, your group or any other Flickriver view.

You can place your badge on your Flickr profile, Blog or Website.

Add to your iGoogle or Netvibes page

Flickriver widget for iGoogle or Netvibes can display almost any Flickriver view - most interesting today, by user, by group, by tag etc. Once added to your personalized homepage, just edit widget settings to select your desired view.

Clickr on one of the buttons below to install:

Embed on your Web site

To embed this view, Copy and Paste the following HTML code:

Black background (preview):

White background (preview):

Firefox and Chrome addons

Adds a 'Flickriver' button to your browser. While viewing any Flickr photos page, click on this button to open the same view on Flickriver.

Install in Firefox
Install in Chrome

Search plugin

Add 'Search on Flickriver' to your browser's search box. Works with Firefox and Internet Explorer. Install search plugin

"View on Flickriver" Greasemonkey script

A Greasemonkey script that adds Flickriver links to various Flickr photo pages - user photos, favorites, pools etc, allowing to quickly open the corresponding Flickriver view.

Also, allows quickly viewing any Flickr photo on black background in large size.

Install "View on Flickriver" script

Bookmarklet

While viewing any Flickr photos page, click on the bookmarklet to open the same view on Flickriver.

To install: drag and drop the following link to your Bookmarks toolbar.
IE users - add the link to your Favorites under the Links folder