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WEB-PHREEQ
is
a
web-based
computer
application
for
aqueous
geochemical
modeling.
WEB-PHREEQ
was
developed
for
classroom
teaching
and
for
routine
calculation
of
the
distribution
of
chemical
species
in
water.
Users
can
calculate
the
effects
of
mixing
of
waters,
adding
phases
to
the
solution,
or
changing
the
solution's
temperature,
Eh,
or
pH.
The
site
features
an
easy
to
use
interface,
frequently
asked
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This
site
examines
the
crystal
chemistry
of
some
common
mineral
groups,
including
garnet,
plagioclase,
pyroxene,
mica
(muscovite
and
biotite),
and
amphibole.
For
each
group,
the
topics
considered
include:
the
sites
in
the
crystal
structure
on
which
the
principal
substitutions
take
place,
the
typical
ranges
of
observed
composition
variation,
how
to
assess
the
quality
of
analyses
from
looking
at
the
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This
site
is
a
lecture
from
Tulane
University
that
explores
atoms
and
how
they
interact
with
one
another
to
determine
the
physical
and
structural
properties
of
crystals.
Topics
include
atoms,
isotopes,
the
quantum
mechanical
view
of
the
atom,
the
electronic
structure
of
atoms,
ions,
electronegativity,
and
various
types
of
bonds
that
bind
the
atoms
together
in
a
crystal
structure.
Tables
and
illustrations
...
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This
site
consists
of
a
compilation
of
crystallographic
and
physical
property
data
for
most
of
the
rock-forming
minerals.
Thirteen
mineral
groups
are
included:
single
oxides,
multiple
oxides,
hydroxides,
sulfates,
phosphates,
orthosilicates
(neosilicates),
sorosilicates
and
cyclosilicates,
chain
silicates
(inosilicates),
sheet
silicates
(phyllosilicates),
framework
silicates
(tektosilicates),
high
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This
site,
developed
by
the
Mineralogical
Society
of
America
for
middle
and
high
school
students,
introduces
the
idea
of
mineral
classification
and
describes
the
seven
major
chemical
groups
into
which
minerals
are
divided.
The
groups
include
native
elements,
sulfides,
sulfates,
silicates,
carbonates,
oxides
and
halides.
Each
group
includes
a
general
description,
plus
a
listing
of
classes
within
the
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The
International
Union
of
Crystallography
maintains
this
clearinghouse
of
educational
resources.
There
are
many
topics
incorporated
into
this
site,
including
applied
crystallography,
crystal
growth,
crystal
structure
analysis,
crystals
and
their
structures,
diffraction,
distance
teaching,
mathematical
techniques,
on-line
courses,
powder
diffraction,
and
symmetry.
This
site
would
be
useful
for
anyone
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This site is a lecture from Tulane University that explores the symmetry observed in crystals. Topics covered include crystallographic axes, the crystal lattice, and unit cells. Tables and illustrations accompany the text.
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This
clearinghouse
consists
of
crystallographic
web
sites.
Topics
include
x-ray
diffraction
systems,
sources
&
detectors,
x-ray
data,
university
crystallography
laboratories,
synchrotron,
crystallographic
tutorials,
crystallographic
software
documentation
(on-line),
crystallographic
software,
crystallographic
servers,
crystallographic
instrument
accessories,
crystallographic
databases,
crystallographic
...
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This volume of the Journal of the Virtual Explorer contains 19 papers in both html and pdf formats. Topics include microstructures, rheology, microfabrics, Mohr circles, natural deformation and deformation experiments. Some of the articles contain animated graphics and slide sets.
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This resource contains :
Deformation Microstructures in Quartzo-Feldspathic Rocks -
http:/
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This
site,
maintained
by
Caltech,
is
a
tutorial
on
the
basic
principles
of
phase
equilibria.
Topics
covered
include
the
first
and
second
laws
of
thermodynamics,
equilibrium,
Gibbs
free
energy,
chemical
potential,
the
graphical
representation
of
equilibrium
conditions,
the
phase
rule,
and
univariant
and
invariant
assemblages.
Also
included
are
several
applets
that
show
the
results
of
changes
in
pressure,
...
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