KSIĄŻKI POWIĄZANE ZE SŁOWEM «ARAGONITE»
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1
Thermodynamics in Geochemistry : The Equilibrium Model: The ...
THE CALCITE-ARAGONITE PHASE DIAGRAM The simplest type of phase
diagram involves a single component that can exist in more than one crystalline
form, that is, a mineral having two or more polymorphs. For example, CaCC>3
can ...
Department of Geology University of Toronto Greg M. Anderson Professor of Geochemistry, Department of Geological and Geophysical Sciences Princeton University David A. Crerar Professor of Geochemistry, 1992
2
An Introduction to Mineral Sciences
12.1.1 Examples of reconstructive transitions in minerals (i) The aragonite <=>
calcite transition The aragonite - calcite equilibrium phase diagram (Figure 12. 1)
shows that aragonite is the stable phase at high pressure and relatively low ...
3
Understanding the Earth
With pCO,, aragonite and high-Mg calcite are precipitated when levels are low,
and as pCO, increases, calcite is precipitated with decreasing Mg2* content, and
a point is reached when aragonite is no longer precipitated. Calcite with around ...
Geoff Brown, Chris Hawkesworth, R. C. L. Wilson, 1992
4
Microfacies of Carbonate Rocks: Analysis, Interpretation and ...
Textbooks favor a stability ranking for marine carbonates with calcite > Mg-calcite
(<12 mol% MgCO3) > aragonite > very high Mg-calcite (>12 mol% MgCO3) and
for meteorically influenced carbonates a ranking with calcite > aragonite ...
5
Marine Reef Aquarium Handbook
Crushed coral consists of ground materials of recent age (aragonite type of
calcite), or mined fossilized limestone of different calcite composition. The best
material for reef tanks is the gravel and sand that accumulates around the base of
the ...
Robert Jay Goldstein, 2007
6
Carbonate Sedimentology and Petrology
we are now dealing with a group of minerals with differing solubilities, the main
process is not one of calcite dissolution, but instead (1) dissolution of the more
soluble phases (aragonite and magnesium-calcite), (2) resultant oversaturation
with ...
Peter A. Scholle, Noel P. James, J. F. Read, 1989
7
The Sea Floor: An Introduction to Marine Geology
An Introduction to Marine Geology Eugen Seibold, Wolfgang H. Berger. Table 3.3
. Inorganic constituents and carbonate minerals in hard parts of marine
organisms (for systematics see Appendix A9) Bacteria Aragonite (CaCCb), iron
oxide, ...
Eugen Seibold, Wolfgang H. Berger, 1996
8
Non-silicates: Sulphates, Carbonates, Phosphates, Halides
Land (1975) have shown that more than enough aragonite is produced by the
disintegration of calcareous codiaccan algae to account for lime mud in the
lagoons. Loreau (1982) concludes that muds of the lime of the Great Bahama
Bank are ...
Luke L. Y. Chang, Robert Andrew Howie, J. Zussman, 1998
9
Minerals: Their Constitution and Origin
(X S 1100 1000 800 1 600 - 400 200 0 (a) Aragonite Calcite 1 = 346 MPa at 25 °
C 0 200 400 600 800 Temperature (°C) P -T phase diagrams, (a) System CaCO],
illustrating stability fields of aragonite and calcite. (b) System A^SiOs, showing ...
Hans-Rudolf Wenk, Andrei Bulakh, 2004
than that of the open structure of calcite under the influence of solvation by the
water molecules, the genesis of aragonite is favored in solutions with a
diminished solvation effect of water. This can be brought about by mixing the
water with ...
George V. Chilingar, Harold Joseph Bissell, Rhodes Whitmore Fairbridge, 1967
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «ARAGONITE»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
aragonite w wiadomościach.
Mother-of-pearl's genesis identified in mineral's transformation …
... at the surface of forming nacre," says Gilbert, noting that the transformation of amorphous calcium carbonate into crystalline aragonite involves calcium atoms, ... «EurekAlert, Paz 15»
New research maps areas most vulnerable to ocean acidification
This map shows the global distribution of aragonite saturation at 50 meters depth. The graphic shows areas that are most vulnerable to ocean acidification since ... «Phys.Org, Paz 15»
Acidification takes toll on Beaufort Sea; threats loom in Chukchi and …
The measurement used is aragonite saturation. Aragonite is a form of calcium carbonate. Higher calcium levels make the water more base, while more absorbed ... «Alaska Dispatch News, Cze 15»
Why calcium carbonate takes on different forms
The material in question, calcium carbonate, sometimes takes the form of calcite and sometimes takes the form of aragonite, a virtually identical form of the ... «RedOrbit, Mar 15»
Why seashells' mineral forms differently in seawater
Calcium carbonate usually crystallizes as calcite, but surprisingly, it forms aragonite in seawater. The outcome affects many different processes—including the ... «Phys.Org, Mar 15»
Life might thrive a dozen miles beneath Earth's surface
A beach outcrop at Davis Head on Lopez Island in Washington State, where researchers at Yale discovered veins of aragonite containing oddly light carbon ... «Phys.Org, Sty 15»
New Global Maps Detail Ocean Acidification
The saturation state of the mineral aragonite, essential to shell-builders, tends to ... The South Pacific Ocean is heavily oversaturated with respect to aragonite (in ... «reportingclimatescience.com, Lis 14»
Evidence of organisms that lived 12 MILES under the crust 100m …
A mineral called aragonite (stock image shown) was found in rocks that are now on the surface. A specific mix of carbon isotopes suggests the aragonite found ... «Daily Mail, Paz 14»
Scientists find life at 20 km deep
At the Geological Society of America's annual meeting, Yale undergraduate student Philippa Stoddard reported on the discovery of aragonite in the San Juan ... «ZME Science, Paz 14»
This Bizarre "Aragonite Flower" Grows from the Damp Ceilings of …
The aragonite flower (shown above) is unique in the world. The world's second largest of the rare speleothem grows in the Caverna da Torrinha. The formation ... «io9, Wrz 14»
