Just doing a little on getting this thread sorted out. First organising the resource collections from this community - next comes the singular contributions.
All of the below resources are previously listed - I'm just preparing a short guide for each of them.

http://s42.photobucket.com/albums/e326/MineralPics/
Overview:
Collection of approximately 250 texturing resources and/or photographic references for minerals both exotic and mundane. Low to moderate resolution, with an extensive breadth of coverage on the subject material.
Also some other miscellaneous textures in other directories, to which the same usage terms apply.
Commentary:
Focus on photographs is sometimes slightly off, and some of the more lustrous stones reflect the flash of the camera. For the latter case, this is generally something that can be corrected during the process of texture creation. Generally speaking, the resource makes for excellent sampling material.
Slightly interesting that the flash reflection actually enhances the effectiveness of some of the stones for the purpose of bedding bodies of water.
Usage:


http://ladyn.tamriel-rebuilt.org/Textures.html
Overview:
Upwards of 500 assorted texture resources, of moderate to high resolution, including:
Bark, Beads, Buttons, Buckles, Bone, Books, Brick, Carapace, Carpet, Carvings (wood), Dirt, Fabric, Fish, Flowers, Frames, Fungi, Fur, Grass, Gravel, Leather, Leaves, Meats, Metal, Paint, Plaster, Stone, Tiles, Weapons, Weave, Wood
Commentary:
Sharpness of focus on photographs varies, but is more than adequate for most texturing work - interestingly, the more unusual resource types (fur, fungus, bone) tend towards being in sharper focus. Lots of interesting pieces, e.g. buttons, crockery, ornate metalwork, and leaves with accompanying reverse sides.
Usage:


http://tamriel-rebuilt.org/forum/viewtopic.php?t=18938
Overview:
Approximately 100 textures of moderate to high resolution, including:
Floorboards, Wooden Containers, Paving, Stonework and Leaves.
Commentary:
These textures are, notably, complete textures and not photographs from which to create textures as those listed above are.
Textures are complete and, where appropriate, tiling. Leaves have accompanying alpha channels.
These textures are available in a collected package at request (to NexUmMonastica), which also contain further textures than those listed in the thread itself.
Usage:
Unspecified. I would recommend contacting NexUmMonastica for clarification if these appear to be what you are looking for.

http://s3.photobucket.com/albums/y76/Caultus/texture%20pics/
Overview:
38 assorted texture resources of moderate resolution - higher resolution shots being potentially available on request to swrdphantom. Includes:
Bark, Leaves, Stone, Stonework, Wood.
Commentary:
Particular highlights, to my mind, lie in some good sources of extractable mosses and lichens and some really interesting pitted soft stones and stonework - including some stones inscribed with (mostly) era-agnostic graffiti. Some photographs unfortunately challenged by mixed lighting.
Usage:
Unspecified, but implicitly allowed for use within the morrowind modding community. If in need of clarification, please PM Swrdphantom

http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=7985
Overview:
Set of texture packs containing Bark, Leaves, Mushrooms. Also a pack of nozzles for those who use Painter.
Commentary:
Honestly, these are frickin' gorgeous. The jealousy, it burns.
Again, these are complete textures ready for putting into the world.
Usage:
Readmes included with each texture pack, excerpt from one below. Please check the readme when you download for the unlikely event of a change in usage conditions.

Unfortunately all my resources got deleted by filepant and elric is down.

When I finish my present project 6 to 12 months. I'll release 300 or 400 seamless textures as a new resource.

Oh wow, that will be really neat pack! Thanks .hehe: :hugs:

http://www.texturewarehouse.com/gallery/

Hey fellow texturers, sorry for the thread necromany, but I really would like to shoot you guys a link to http://www.mnwright.btinternet.co.uk/programs/dxtbmp.htm, it's a must-have tool that I've been using for years, it can load a texture's diffuse bitmap and alpha map separately, so it's extremely useful for attaching high-quality grayscale alphamaps to textures. As well as that, it can open a number of regular formats such as png's, jpg's, bmp's (which are very useful as a base diffuse), tga's, and more, it also has advanced texture compression settings for dds as well as tga, and a few other formats, which is a godsend considering the photoshop dds plugin will often poorly compress dds alpha causing gradient banding.

Anyways, I could go on about how awesome it is, or you could just grab it! http://www.mnwright.btinternet.co.uk/programs/dxtbmp.htm's the link again:
http://www.mnwright.btinternet.co.uk/programs/dxtbmp.htm, requires http://www.mnwright.btinternet.co.uk/graphix.htm#dlls.

Thanks for the heads-up SWG; looks like a great tool.

Actually, at the moment I have no idea what to do with this thread. I don't at all have the time to sort it out (and it has needed sorting for years now), and I certainly don't have the time (or really the inclination, given that I don't mod anymore) to improve it... but I do still think that it can be a valuable resource to the community.
Maybe I should just take a bullet for the team - sort it out next weekend and ask Fligg if I can host it as a site over at GHF?

:nope: :blink:
How could this be going on and I didn't see this. I do hope someone puts this info sticky or in a wiki or somewhere where it won't just fall off the boards. the tutorials alone are worth way too much to lose (at least to a noob like me)

ST
still kicking myself for not finding this til now :facepalm: