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Scanning Electron Photomicrographs and Spectra: FMD

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Scanning Electron Photomicrographs and Spectra: FMD

 

Morphotype Photos

Aggregate
03118b38.tif.jpg
Formation of separate units gathered into a mass

Attaching
rl2fil2.tif.jpg
Putative microbial morphologies attaching to minerals
Attachment
sp5bug11.tif.jpg
ring attachment site
Basket
03118b44.tif.jpg
Circular arrangement of individual collection of spicules forming a rosette shape with a dimple or space in center
Beads on a String
sp5bug06.tif.jpg
Spheroids connected by short variable length filamentous structures
Bridging
l62517r.tif.jpg
Film or filaments that bridge between crystals
Corroded
fnh2sal3.tif.jpg
Mineral surface is characterized by pits and other features that suggest dissolution
Crystals
fnh2sal4.tif.jpg
Angular minerals with discrete mineral faces see euhedral , subhedral
Cuboid
fn18b1w2.tif.jpg
6 approximately equal sides
Debris
l80616c.tif.jpg
Non-specific textured with some vertical relief
Dimpled
sp5bug11.tif.jpg
Sphereoid or other irregular shape that has a dimple in it, possibly indicating collapse, not including filaments
Disks
EAredwall04.tif.jpg
Disk shaped features, standing proud of the surface. Generally <1µm. Could be clastics or microbes
Euhedral
fnh2sal5.tif.jpg
Displaying multiple well defined crystal faces
Felted
L334b.tif.jpg
Composed of strands, fibers, or needles woven together (like felt cloth)
Filaments
SDendriteMN_22.TIF.jpg
Elongate, curved feature, generally < 1-2 µm wide and 1-20µm long
Film
228_2_04.TIF.jpg
Smooth, very thin sheet
FMD
l80511n.tif.jpg
Ferromanganese deposit – collection of mixed iron and manganese oxides see also Fe-Oxide, Mn-oxide
Hairy
sp6spke2.tif.jpg
Short hair like appendages on the outer surface
Hexagonal
l80511a.tif.jpg
Six sided structure
Hillocks
sp4cr3.tif.jpg
Epitaxial growth crystals, small low hill-like features on crystals
Microrod
L334g.tif.jpg
Small elongate (rod-shaped) crystal, no curve, generally <<1µm wide by 1-2µm long
Needle
sw125d.tif.jpg
Needle crystals, straight and narrow compared to length
Pits
EAredwall03.tif.jpg
Angular and steep sided depression in rock surface
Platy
l62517a.tif.jpg
Thin sheets of mineral
Rods
L1143o.tif.jpg
Varying length cylindrical shape, does not necessarily imply biological
Rosette
l1142l.tif.jpg
Rose-like cluster of tabular morphologies
Segemented
sp5bug10.tif.jpg
Distinct segments denoted by pinching in between segments, like a string of sausages
Septate
sp6fil1.tif.jpg
Filaments that has compartments, divided by septae or cross walls
Spheriod
sp5bug11.tif.jpg
Spheres and less than perfect spheres
Stars
EAredwall10.tif.jpg
Star shaped mineral, radiating crystals
Striations
EAredwall02a.tif.jpg
Parallel lines on crystal faces
Subhedral
EAredwall01.tif.jpg
Displaying one to two complete or partial crystal faces
Tabular
sp6cls14.tif.jpg
Square, rectangular, or hexagonal crystals, where the third dimension is smaller than the other two
Thread
l80511a.tif.jpg
Filamentous-like structures < 100 nm in diameter
Tissue-paper
l80511n.tif.jpg
Thin crumpled sheets of minerals

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