Earth & Environmental Sciences
hydrothermal deposit
92%
impact structure
89%
colonization
62%
mineral deposit
60%
weathering
56%
hydrothermal circulation
55%
breccia
44%
mineral
37%
marcasite
37%
calcite
33%
sulfide
31%
product
26%
preserve
23%
X-ray diffraction
21%
gossan
20%
atomic emission spectroscopy
20%
lepidocrocite
19%
megacryst
18%
mineral alteration
18%
jarosite
17%
ferrihydrite
17%
hydrothermal activity
15%
nutrient availability
15%
quartz vein
15%
hydrothermal system
15%
goethite
14%
electron microscopy
14%
meteorite
14%
microbial activity
13%
gypsum
13%
hydration
12%
pyrite
12%
coating
11%
pipe
10%
plasma
10%
dissolution
10%
timescale
9%
quartz
9%
surface water
9%
carbonate
9%
oxidation
8%
nutrient
8%
habitat
8%
chemical
6%
energy
6%
rock
6%
material
5%
water
4%
effect
3%
Physics & Astronomy
weathering
97%
mineral deposits
86%
minerals
67%
breccia
64%
deposits
61%
calcite
44%
sulfides
36%
nutrients
30%
products
29%
microorganisms
27%
hydrothermal systems
20%
meteorite collisions
20%
quartz
19%
habitats
16%
gypsum
15%
pyrites
15%
chemical energy
15%
veins
14%
Canada
13%
surface water
13%
carbonates
12%
diffraction
12%
hydration
11%
solid surfaces
11%
availability
11%
rocks
10%
delivery
10%
dissolving
10%
x rays
10%
electron microscopy
9%
oxidation
8%
coatings
7%
water
6%
spectroscopy
5%
Agriculture & Biology
microbial colonization
100%
weathering
82%
minerals
51%
calcite
27%
sulfides
22%
quartz
16%
X-ray diffraction
13%
preserves
12%
lepidocrocite
12%
jarosite
11%
geological eons
11%
ferrihydrite
11%
Nunavut
10%
goethite
10%
pyrite
9%
microorganisms
8%
gypsum
8%
atomic absorption spectrometry
7%
carbonates
7%
surface water
7%
pipes
7%
microbial activity
7%
nutrient availability
7%
rocks
6%
light microscopy
5%
Canada
5%
coatings
5%
electron microscopy
5%
oxidation
5%
nutrients
4%
energy
4%
habitats
3%
water
2%
temperature
2%
Medicine & Life Sciences
Minerals
66%
Sulfides
30%
Calcium Carbonate
28%
Quartz
21%
X-Ray Diffraction
18%
jarosite
16%
goethite
15%
ferric oxyhydroxide
14%
Meteoroids
14%
pyrite
14%
Nunavut
13%
ferryl iron
13%
Nutrients
12%
Mineral Waters
11%
Carbonates
10%
Calcium Sulfate
10%
Atomic Spectrophotometry
10%
ferric oxide
9%
Ecosystem
8%
Islands
8%
Canada
6%
Electron Microscopy
6%
Veins
6%
Microscopy
6%
Temperature
5%
Water
5%