geoscixyz · santisoler · Dec 11, 2024
diff --git a/content/DC_resistivity/DC_basic_principles_heterogeneous_earth.rst b/content/DC_resistivity/DC_basic_principles_heterogeneous_earth.rst
@@ -27,7 +27,7 @@ Exploration Geophysicists.
     :file: ./figure2.html
 
 
-.. _Mont Isa: http://em.geosci.xyz/content/case_histories/mt_isa/index.html
+.. _Mont Isa: https://em.geosci.xyz/content/case_histories/mt_isa/index.html
 
 Charge distribution
 ===================

diff --git a/content/DC_resistivity/DC_examples.rst b/content/DC_resistivity/DC_examples.rst
@@ -5,5 +5,5 @@ Case Histories
 
 `Mont Isa`_ is great example of the use of DC as part of a mining exploration campaign.
 
-.. _Mont Isa: http://em.geosci.xyz/content/case_histories/mt_isa/index.html
+.. _Mont Isa: https://em.geosci.xyz/content/case_histories/mt_isa/index.html
 
diff --git a/content/DC_resistivity/DC_instruments.rst b/content/DC_resistivity/DC_instruments.rst
@@ -175,7 +175,7 @@ References
 
 Corwin, R.F., 1990, *The self-potential method for environmental and engineering applications*, in Geotechnical and Environmental Geophysics, Vol I: Review and Tutorial, (Ward, S.H., ed), Society of Exploration Geophysics, pg 127 - 146.
 
-.. _Geometrics: http://www.geometrics.com/
+.. _Geometrics: https://www.geometrics.com/
 
 
 

diff --git a/content/DC_resistivity/DC_interpretation.rst b/content/DC_resistivity/DC_interpretation.rst
@@ -211,9 +211,9 @@ Data, model and inversion files used in this page can be downloaded below:
  `Two_Spheres <https://storage.googleapis.com/simpeg/em_geosci/DCR_Interp_TwoSpheres.zip>`_
 
 
-Utilities: UBC-DC2D `data viewer <http://gif.eos.ubc.ca/sites/default/files
+Utilities: UBC-DC2D `data viewer <https://gif.eos.ubc.ca/sites/default/files
 /dcip2d-data-viewer.zip>`_ and `model viewer
-<http://gif.eos.ubc.ca/sites/default/files/dcip2d-model-viewer.zip>`_
+<https://gif.eos.ubc.ca/sites/default/files/dcip2d-model-viewer.zip>`_
 
 References
 **********

diff --git a/content/appendix/apps.rst b/content/appendix/apps.rst
@@ -49,6 +49,6 @@ If you
 are familiar with python and github, you can install them via
 https://github.com/geoscixyz/gpgLabs
 
-.. _Jupyter: http://jupyter.org
+.. _Jupyter: https://jupyter.org
 
 
diff --git a/content/appendix/lectures.rst b/content/appendix/lectures.rst
@@ -108,7 +108,7 @@ Magnetics 2
 - `Magnetics lecture slides <https://storage.googleapis.com/simpeg/eosc350lectures/3_Magnetics.pdf>`_
 
 
-- `Jupyter notebook: InducedMag2D.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Mag/InducedMag2D.ipynb>`_
+- `Jupyter notebook: InducedMag2D.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Mag/InducedMag2D.ipynb>`_
 
 
 
@@ -137,7 +137,7 @@ Magnetics 3
 - `Magnetics lecture slides <https://storage.googleapis.com/simpeg/eosc350lectures/3_Magnetics.pdf>`_
 
 
-- `Jupyter notebook: InducedMag2D.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Mag/InducedMag2D.ipynb>`_
+- `Jupyter notebook: InducedMag2D.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Mag/InducedMag2D.ipynb>`_
 
 
 
@@ -166,7 +166,7 @@ Magnetics 4
 - `Magnetics lecture slides <https://storage.googleapis.com/simpeg/eosc350lectures/3_Magnetics.pdf>`_
 
 
-- `Jupyter notebook: InducedMag2D.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Mag/InducedMag2D.ipynb>`_
+- `Jupyter notebook: InducedMag2D.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Mag/InducedMag2D.ipynb>`_
 
 
 
@@ -195,7 +195,7 @@ Magnetics 5
 - `Magnetics lecture slides <https://storage.googleapis.com/simpeg/eosc350lectures/3_Magnetics.pdf>`_
 
 
-- `Jupyter notebook: InducedMag2D.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Mag/InducedMag2D.ipynb>`_
+- `Jupyter notebook: InducedMag2D.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Mag/InducedMag2D.ipynb>`_
 
 
 
@@ -363,7 +363,7 @@ Seismic 5
 - `Seismology lecture slides <https://storage.googleapis.com/simpeg/eosc350lectures/Seismology.pdf>`_
 
 
-- `Jupyter notebook: SeismicNMOapp.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Seismic/NMO/SeismicNMOapp.ipynb>`_
+- `Jupyter notebook: SeismicNMOapp.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/Seismic/NMO/SeismicNMOapp.ipynb>`_
 
 
 
@@ -446,7 +446,7 @@ Electromagnetics 2
 - `EM lecture slides <https://storage.googleapis.com/simpeg/eosc350lectures/5_EM.pdf>`_
 
 
-- `Jupyter notebook: ResponseFct.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/EM/ResponseFct/ResponseFct.ipynb>`_
+- `Jupyter notebook: ResponseFct.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/EM/ResponseFct/ResponseFct.ipynb>`_
 
 
 
@@ -475,7 +475,7 @@ Electromagnetics 3
 - `EM lecture slides <https://storage.googleapis.com/simpeg/eosc350lectures/5_EM.pdf>`_
 
 
-- `Jupyter notebook: ResponseFct.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/EM/ResponseFct/ResponseFct.ipynb>`_
+- `Jupyter notebook: ResponseFct.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/EM/ResponseFct/ResponseFct.ipynb>`_
 
 
 
@@ -502,7 +502,7 @@ DC Resistivity 1
 
 
 
-- `Jupyter notebook: DCLab.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/DC/DCLab.ipynb>`_
+- `Jupyter notebook: DCLab.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/DC/DCLab.ipynb>`_
 
 
 
@@ -531,7 +531,7 @@ DC Resistivity 2
 - `DC Resistivity lecture slides <https://storage.googleapis.com/simpeg/eosc350lectures/9_DC_Resistivity.pdf>`_
 
 
-- `Jupyter notebook: DCLab.ipynb <http://mybinder.org/repo/ubcgif/gpgLabs/notebooks/DC/DCLab.ipynb>`_
+- `Jupyter notebook: DCLab.ipynb <https://mybinder.org/repo/ubcgif/gpgLabs/notebooks/DC/DCLab.ipynb>`_
 
 
 

diff --git a/content/electromagnetics/electromagnetic_basic_principles.rst b/content/electromagnetics/electromagnetic_basic_principles.rst
@@ -145,7 +145,7 @@ Consider the goal of using an inductive EM source to locate a conductive body bu
     : Conceptual diagram for three loops
 
 
-Eddy currents are generated in the buried body by changing magnetic flux passing through the body. We can learn a lot about the coupling between the transmitter, buried body and receiver by approximating the buried body by a wire coil with resistance :math:`R` and inductance :math:`L`. The resistance approximates the electrical resistivity of the earth and the inductance is a geometrical quantity that depends on the shape of the loop. The following discussion of the circuit model will be mostly conceptual. For a more detailed and quantitative discussion please see the `em.geosci <http://em.geosci.xyz/content/maxwell3_fdem/circuitmodel_for_eminduction/index.html>`__ resource--(not required for eosc 350.
+Eddy currents are generated in the buried body by changing magnetic flux passing through the body. We can learn a lot about the coupling between the transmitter, buried body and receiver by approximating the buried body by a wire coil with resistance :math:`R` and inductance :math:`L`. The resistance approximates the electrical resistivity of the earth and the inductance is a geometrical quantity that depends on the shape of the loop. The following discussion of the circuit model will be mostly conceptual. For a more detailed and quantitative discussion please see the `em.geosci <https://em.geosci.xyz/content/maxwell3_fdem/circuitmodel_for_eminduction/index.html>`__ resource--(not required for eosc 350.
 
 Transmitter and primary field
 -----------------------------
@@ -176,7 +176,7 @@ The effect on the secondary field of the relative positions and orientations of
 .. math::
   \frac{H_s}{H_p} = CQ(\alpha) = \frac{\alpha^2 + i\alpha}{1 + \alpha^2}
 
-where :math:`\alpha = \omega L/R` is called the induction number. See `em.geosci <http://em.geosci.xyz/content/maxwell3_fdem/circuitmodel_for_eminduction/understanding_harmonicEMresponse.html#>`__ for full derivations of the coupling coefficient and inductive response function.
+where :math:`\alpha = \omega L/R` is called the induction number. See `em.geosci <https://em.geosci.xyz/content/maxwell3_fdem/circuitmodel_for_eminduction/understanding_harmonicEMresponse.html#>`__ for full derivations of the coupling coefficient and inductive response function.
 
 The secondary field will have a much smaller amplitude than the primary field (units of field measurements are often parts per million) and also a phase shift. We can decompose the signal into a component in phase with the transmitter and another component one quarter period out of phase, called the quadrature component. These components can be represented as a complex number whose real part is the in-phase secondary field and whose imaginary part is the quadrature signal.
 

diff --git a/content/electromagnetics/electromagnetic_physical_properties.rst b/content/electromagnetics/electromagnetic_physical_properties.rst
@@ -26,6 +26,6 @@ conductivity for rocks and minerals is presented in :numref:`roughchart`.
 
 While conductivity is the generally the main physical property of interest, EM induction methods also depend on the `magnetic permeability`_ and `electrical permitivity`_ of rocks. Their importance depends upon the frequency of the EM signal used for given a system.
 
-.. _magnetic permeability: http://em.geosci.xyz/content/physical_properties/magnetic_permeability/index.html
+.. _magnetic permeability: https://em.geosci.xyz/content/physical_properties/magnetic_permeability/index.html
 
-.. _electrical permitivity: http://em.geosci.xyz/content/physical_properties/dielectric_permittivity/index.html
+.. _electrical permitivity: https://em.geosci.xyz/content/physical_properties/dielectric_permittivity/index.html
diff --git a/content/gravity/gravity_data.rst b/content/gravity/gravity_data.rst
@@ -39,7 +39,7 @@ Modern instruments use similar mechanisms, but they incorporate automatic
 leveling, computer driven recording, and other convenience features.
 
 .. See, for
-.. example, http://www.lacosteromberg.com/ that has several highly respected
+.. example, https://www.lacosteromberg.com/ that has several highly respected
 .. portable instruments (both spring based (image to the right) and "free-fall"
 .. types), as well as air-sea gravity systems.
 

diff --git a/content/gravity/gravity_gradients.rst b/content/gravity/gravity_gradients.rst
@@ -176,7 +176,7 @@ of targets can be detected?
 #. Anticipated limit for future systems is a little better.
 
 .. Two (somewhat complex) figures summarizing the limits of detectability for
-.. various ore bodies (mostly in Australia) are provided separately `here<http://www.eoas.ubc.ca/courses/eosc350/content/methods/meth_4/assets/g-limits.pdf>`_
+.. various ore bodies (mostly in Australia) are provided separately `here<https://www.eoas.ubc.ca/courses/eosc350/content/methods/meth_4/assets/g-limits.pdf>`_
 .. (PDF). Keep in mind that questions about structures associated with oil and
 .. gas are often larger targets than those associated with mineral exploration,
 .. so these types of cutting edge procedures are so far more directly useful to
@@ -193,7 +193,7 @@ following locations:
 
 - If you are interested, there are some interactive figures on frequency
   domain filtering at
-  http://www.geoexplo.com/airborne_survey_workshop_filtering.html.
+  https://www.geoexplo.com/airborne_survey_workshop_filtering.html.
 
 - There is a good summary of Advanced Processing of Potential Fields by Getech
   (Houston, and Leeds). See the tutorial on-line at Getech via Advanced
@@ -202,8 +202,8 @@ following locations:
 .. The Getech home page is at https://getech.com/gravity-magnetic-data-services/.
 
 
-.. _a separate page of images: http://www.eoas.ubc.ca/courses/eosc350/content/methods/meth_4/assets/gravgrad-figs.pdf
-.. _Turner Valley: http://www.sgl.com/technicalpapers/EAGEabst-final-TV.pdf
+.. _a separate page of images: https://www.eoas.ubc.ca/courses/eosc350/content/methods/meth_4/assets/gravgrad-figs.pdf
+.. _Turner Valley: https://www.sgl.com/technicalpapers/EAGEabst-final-TV.pdf
 
 
 
diff --git a/content/gravity/gravity_other_notes.rst b/content/gravity/gravity_other_notes.rst
@@ -141,6 +141,6 @@ laser interferometer. Specifications include:
 - Operating dynamic range: world-wide
 
 .. For a good summary of the instrument, how it works, applications, and current
-.. users, see the company's web page at http://www.microgsolutions.com/index.html
+.. users, see the company's web page at https://www.microgsolutions.com/index.html
 
-.. _Geodetic Survey Division: http://webapp.geod.nrcan.gc.ca/geod/
+.. _Geodetic Survey Division: https://webapp.geod.nrcan.gc.ca/geod/
diff --git a/content/induced_polarization/induced_polarization_basic_principles.rst b/content/induced_polarization/induced_polarization_basic_principles.rst
@@ -88,6 +88,6 @@ response is provided. Those measurements can be in time or frequency and the uni
 of the "chargeability" are inherited from the data. We outline below:
 
 .. ToDo: Integrate the material currently in Induced polarization
-.. http://gpg.geosci.xyz/en/physprops/content/induced_polarization/induced_polarization_measurements_data.html
+.. https://gpg.geosci.xyz/en/physprops/content/induced_polarization/induced_polarization_measurements_data.html
 .. so that go through each type of datum and hence the meanings and units for each of the
 .. associated chargeabilities.
diff --git a/content/induced_polarization/induced_polarization_physical_properties.rst b/content/induced_polarization/induced_polarization_physical_properties.rst
@@ -223,7 +223,7 @@ Thus, the chargeability of a rock increases and its tortuosity increases.
 .. Physical Phenomenons
 .. ====================
 
-.. .. _induced polarization measurements data: http://gpg.geosci.xyz/en/latest/content/induced_polarization/induced_polarization_measurements_data.html
+.. .. _induced polarization measurements data: https://gpg.geosci.xyz/en/latest/content/induced_polarization/induced_polarization_measurements_data.html
 
 .. The chargeability of earth materials is essentially an electrochemical effect
 .. caused by many factors, not all of which are completely understood. If ground

diff --git a/content/magnetics/magnetics_basic_principles.rst b/content/magnetics/magnetics_basic_principles.rst
@@ -89,7 +89,7 @@ Earth's field has a strength of approximately 70,000 nanoTeslas
 equator. Field orientation and strength varies around the world, as presented
 in :numref:`IGRF_three_figures` based upon the IGRF from 2003 (NOAA_).
 
-.. _IAGA: http://www.ngdc.noaa.gov/IAGA/vmod/
+.. _IAGA: https://www.ngdc.noaa.gov/IAGA/vmod/
 
 .. _magnetics_three_figures:
 
@@ -640,11 +640,11 @@ California 95131 U.S.A.
 
 
 .. links:
-.. _NOAA: http://www.ngdc.noaa.gov/geomag/geomag.shtml
-.. _Canadian National Geomagnetism Program: http://www.geomag.nrcan.gc.ca/index-eng.php
-.. _magnetic field calculator: http://www.ngdc.noaa.gov/geomag-web/
-.. _page: http://www.ngdc.noaa.gov/ngdc.html
-.. _homepage: http://www.geomag.nrcan.gc.ca/index-eng.php
-.. _geomagnetics website: http://www.geomag.bgs.ac.uk/
+.. _NOAA: https://www.ngdc.noaa.gov/geomag/geomag.shtml
+.. _Canadian National Geomagnetism Program: https://www.geomag.nrcan.gc.ca/index-eng.php
+.. _magnetic field calculator: https://www.ngdc.noaa.gov/geomag-web/
+.. _page: https://www.ngdc.noaa.gov/ngdc.html
+.. _homepage: https://www.geomag.nrcan.gc.ca/index-eng.php
+.. _geomagnetics website: https://www.geomag.bgs.ac.uk/
 .. _magnetic_app: https://mybinder.org/v2/gh/geoscixyz/gpgLabs/main?filepath=notebooks%2Fmag%2FMag_Induced2D.ipynb
 .. _geodynamo: https://commons.wikimedia.org/w/index.php?curid=1712490
diff --git a/content/magnetics/magnetics_interpretation.rst b/content/magnetics/magnetics_interpretation.rst
@@ -110,7 +110,7 @@ Call for contributors
 .. raw:: html
 
    <div class="col-md-2" align="center">
-      <a href="http://github.com/ubcgif/em"><i class="fa fa-wrench fa-4x" aria-hidden="true"></i></a>
+      <a href="https://github.com/ubcgif/em"><i class="fa fa-wrench fa-4x" aria-hidden="true"></i></a>
    </div>
 
 There are many other filters published in the literature. Please contact us if you would like to contribute to this page.
@@ -382,11 +382,11 @@ We note the following features:
 
 
 .. image:: https://img.shields.io/badge/powered%20by-SimPEG-blue.svg
-    :target: http://simpeg.xyz
+    :target: https://simpeg.xyz
     :alt: SimPEG</pre>
 
 
-.. _Simpeg: http://simpeg.xyz
+.. _Simpeg: https://simpeg.xyz
 
 Validation
 ^^^^^^^^^^
@@ -403,14 +403,14 @@ Final Interpretation
 .. raw:: html
 
    <div class="col-md-2" align="center">
-      <a href="http://github.com/ubcgif/em"><i class="fa fa-wrench fa-4x" aria-hidden="true"></i></a>
+      <a href="https://github.com/ubcgif/em"><i class="fa fa-wrench fa-4x" aria-hidden="true"></i></a>
    </div>
 
 
 .. Old Material
 .. ============
 
-.. .. _separate sidebar: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/blakely/blakely.html
+.. .. _separate sidebar: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/blakely/blakely.html
 
 
 .. 2D plots of magnetic data, often referred to as maps, can provide insight
@@ -426,7 +426,7 @@ Final Interpretation
 .. earth's field is measured at every location. To the right is a total field
 .. strength map for the whole world (a full size version is in the sidebar_).
 
-.. .. _sidebar: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/sidebar-fields.html
+.. .. _sidebar: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/sidebar-fields.html
 
 .. At the scale of most exploration or engineering surveys, a map of total field
 .. data gathered over ground with no buried susceptible material would appear
@@ -442,7 +442,7 @@ Final Interpretation
 .. with a larger version, including alternative colour scale schemes, `shown in a
 .. sidebar`_.
 
-.. .. _shown in a sidebar: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/sidebar-airmaps.html
+.. .. _shown in a sidebar: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/sidebar-airmaps.html
 
 .. .. figure:: ./images/map-cust.gif
 ..   :figclass: float-right-360

diff --git a/content/magnetics/magnetics_physical_property.rst b/content/magnetics/magnetics_physical_property.rst
@@ -11,4 +11,4 @@ Background information about susceptility, how it is measured and tables of valu
 
 .. raw:: html
 
-    <p><a href="https://commons.wikimedia.org/wiki/File:Magnetite_Lodestone.jpg#/media/File:Magnetite_Lodestone.jpg"><img alt="Magnetite Lodestone.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Magnetite_Lodestone.jpg/1200px-Magnetite_Lodestone.jpg"></a><br>By <a rel="nofollow" class="external text" href="http://www.flickr.com/people/14405058@N08">Ryan Somma</a> - <a rel="nofollow" class="external text" href="http://www.flickr.com/photos/14405058@N08/2268638529/">Magnetite Lodestone</a>, <a title="Creative Commons Attribution-Share Alike 2.0" href="http://creativecommons.org/licenses/by-sa/2.0">CC BY-SA 2.0</a>, <a href="https://commons.wikimedia.org/w/index.php?curid=5228830">https://commons.wikimedia.org/w/index.php?curid=5228830</a></p>
+    <p><a href="https://commons.wikimedia.org/wiki/File:Magnetite_Lodestone.jpg#/media/File:Magnetite_Lodestone.jpg"><img alt="Magnetite Lodestone.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Magnetite_Lodestone.jpg/1200px-Magnetite_Lodestone.jpg"></a><br>By <a rel="nofollow" class="external text" href="https://www.flickr.com/people/14405058@N08">Ryan Somma</a> - <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/14405058@N08/2268638529/">Magnetite Lodestone</a>, <a title="Creative Commons Attribution-Share Alike 2.0" href="https://creativecommons.org/licenses/by-sa/2.0">CC BY-SA 2.0</a>, <a href="https://commons.wikimedia.org/w/index.php?curid=5228830">https://commons.wikimedia.org/w/index.php?curid=5228830</a></p>
diff --git a/content/magnetics/magnetics_processing.rst b/content/magnetics/magnetics_processing.rst
@@ -36,7 +36,7 @@ any day in the most recent 3 years.
     : Adapted from `NRC`_
 
 
-.. _geomag: http://www.geomag.nrcan.gc.ca/index-eng.php
+.. _geomag: https://www.geomag.nrcan.gc.ca/index-eng.php
 .. _NRC: https://www.spaceweather.gc.ca/tech/index-en.php#pip
 
 .. _magnetics_regional_trend:
Original file line number	Diff line number	Diff line change
Expand Up		@@ -5,5 +5,5 @@ Case Histories

		`Mont Isa`_ is great example of the use of DC as part of a mining exploration campaign.

		.. _Mont Isa: http://em.geosci.xyz/content/case_histories/mt_isa/index.html
		.. _Mont Isa: https://em.geosci.xyz/content/case_histories/mt_isa/index.html
Original file line number	Diff line number	Diff line change
Expand Up		@@ -175,7 +175,7 @@ References

		Corwin, R.F., 1990, The self-potential method for environmental and engineering applications, in Geotechnical and Environmental Geophysics, Vol I: Review and Tutorial, (Ward, S.H., ed), Society of Exploration Geophysics, pg 127 - 146.

		.. _Geometrics: http://www.geometrics.com/
		.. _Geometrics: https://www.geometrics.com/



Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -11,4 +11,4 @@ Background information about susceptility, how it is measured and tables of valu

		.. raw:: html

		<p><a href="https://commons.wikimedia.org/wiki/File:Magnetite_Lodestone.jpg#/media/File:Magnetite_Lodestone.jpg"><img alt="Magnetite Lodestone.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Magnetite_Lodestone.jpg/1200px-Magnetite_Lodestone.jpg"></a><br>By <a rel="nofollow" class="external text" href="http://www.flickr.com/people/14405058@N08">Ryan Somma</a> - <a rel="nofollow" class="external text" href="http://www.flickr.com/photos/14405058@N08/2268638529/">Magnetite Lodestone</a>, <a title="Creative Commons Attribution-Share Alike 2.0" href="http://creativecommons.org/licenses/by-sa/2.0">CC BY-SA 2.0</a>, <a href="https://commons.wikimedia.org/w/index.php?curid=5228830">https://commons.wikimedia.org/w/index.php?curid=5228830</a></p>
		<p><a href="https://commons.wikimedia.org/wiki/File:Magnetite_Lodestone.jpg#/media/File:Magnetite_Lodestone.jpg"><img alt="Magnetite Lodestone.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/Magnetite_Lodestone.jpg/1200px-Magnetite_Lodestone.jpg"></a><br>By <a rel="nofollow" class="external text" href="https://www.flickr.com/people/14405058@N08">Ryan Somma</a> - <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/14405058@N08/2268638529/">Magnetite Lodestone</a>, <a title="Creative Commons Attribution-Share Alike 2.0" href="https://creativecommons.org/licenses/by-sa/2.0">CC BY-SA 2.0</a>, <a href="https://commons.wikimedia.org/w/index.php?curid=5228830">https://commons.wikimedia.org/w/index.php?curid=5228830</a></p>