i am looking for help to identify some rocks i found and brought back with me from europe i live in canada.
i'm sorry in advance if made a mistake by posting link to my website, but i have some high resolution pictures of the rocks and to many of them so i figured better the link then uploading 50+ photos here is the link to see the rocks. http://www.groundedphotography.ca/rocks.html
many thanks in advance
here i added a picture of each rock for more detailed pictures, different angles and close ups see link above.(too many to upload here )
It is very difficult to make useful IDs of your specimens from your (good) photos.
And just 'Europe' as location data doesn't help much, I'm afraid.
Many minerals are similar in external appearance, and dark ones can be especially difficult to tell apart, particularly from photos. To ID mineral species, we need to handle them, moving them in the light so we can gauge the shapes of crystals and the number and orientations of cleavages. Handling them also allows us to categorize minerals by lustre, fracture and colour. We might also need to test them for hardness, density, and their streak. Still, all that macroscopic examination may leave ambiguity. Microscopic examination is often necessary, using thin sections and plain and polarized light.
So, as things stand, I can only give some vague pointers:
1. metamorphic or hydrothermal mineral
2. possibly a volcanic sinter, looks fairly modern
3. quartz and pyrites, from a vein
4. anthracite or obsidian (very different, I know)
the first picture rock is really heavy yet easy to break off pieces, the second with sun light has lots of variences of colors showing , the 3rd small rock is extremely light comparable to balsa wood and seems solid as droped it and did not break or crack , all four of them found in Romania and the 5th rock not previewed here but on my website(link) that is a greenish colored very fine surface found in Hungary.