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Quartz Geodes Category
Geodes (Greek
geoides, "earthlike") are geological
rock formations which occur in
sedimentary and certain volcanic
rocks. Geodes are essentially rock cavities or vugs with internal crystal
formations or concentric banding. The exterior of the most common geodes is
generally
limestone or a related rock, while the interior contains quartz crystals
and/or
chalcedony and other mineral deposits. Other geodes are completely filled with crystal, being
solid all the way through. These types of geodes are called
nodules.
The size of the crystals, including their form and shade of color,
vary—making each geode unique.
Minerals found in geodes include
quartz and chalcedony, calcite, selenite, marcasite and pyrite, barite,
sphalerite, strontianite, pyrolusite, goethite and kaohnite.
There is no easy way of telling what the inside of a geode holds until it
is cut open or broken apart, however, geodes from any one locality usually have
a more restricted variety of interior mineralization.
Quartz
Geodes: Clear/White
Image Code F3641 |
Catalogue No.: F3641
Description: Quartz Geode. Brazil, South America.
Size: 460 x 440mm. |
Image Code F3646 |
Catalogue No.: F3646
Description: Quartz Geode. Brazil, South America.
Size: 170 Ømm. |
Image Code F3660 |
Catalogue No.: F3660
Description: Quartz Geode. Brazil, South America.
Size: 301 x 345mm. |
Image Code F3661 |
Catalogue No.: F3661
Description: Quartz Geode. Brazil, South America.
Size: 342 x 280mm. |
Image Code F3663 |
Catalogue No.: F3663
Description: Quartz Geode. Brazil, South America.
Size: 563 x 305mm. |
Image Code F3666 |
Catalogue No.: F3666
Description: Quartz Geode. Brazil, South America.
Size: 488 x 285mm. |
Image Code F3668 |
Catalogue No.: F3668
Description: Quartz Geode. Brazil, South America.
Size: 420 x 290mm. |
Image Code F3669 |
Catalogue No.: F3669
Description: Quartz Geode. Brazil, South America.
Size: 343 x 295mm. |
Image Code F3670 |
Catalogue No.: F3670
Description: Quartz Geode. Brazil, South America.
Size: 481 x 275mm. |
Image Code F3671 |
Catalogue No.: F3671
Description: Quartz Geode. Brazil, South America.
Size: 283 x 253mm. |
Image Code F3673 |
Catalogue No.: F3673
Description: Quartz Geode. Brazil, South America.
Size: 415 x 210mm. |
Image Code F3674 |
Catalogue No.: F3674
Description: Quartz Geode. Brazil, South America.
Size: 400 x 255mm. |
Image Code F3675 |
Catalogue No.: F3675
Description: Quartz Geode. Brazil, South America.
Size: 360 x 315mm. |
Image Code F3677 |
Catalogue No.: F3677
Description: Quartz Geode. Brazil, South America.
Size: 475 Ømm. |
Quartz
Geodes: Red rings/Red edge
Image Code F3643 |
Catalogue No.: F3643
Description: Quartz Geode. Brazil, South America.
Size: 320 Ømm. |
Image Code F3644 |
Catalogue No.: F3644
Description: Quartz Geode. Brazil, South America.
Size: 285 Ømm. |
Image Code F3645 |
Catalogue No.: F3645
Description: Quartz Geode. Brazil, South America.
Size: 325 Ømm. |
Image Code F3657 |
Catalogue No.: F3657
Quartz Geode. Brazil, South America.
Description:
Size: 370 Ømm. |
Image Code F3662 |
Catalogue No.: F3662
Description: Quartz Geode. Brazil, South America.
Size: 400 x 260mm. |
Image Code F3664 |
Catalogue No.: F3664
Description: Quartz Geode. Brazil, South America.
Size: 315 x 281mm. |
Image Code F3665 |
Catalogue No.: F3665
Description: Quartz Geode. Brazil, South America.
Size: 285 x 250mm. |
Image Code F3676 |
Catalogue No.: F3676
Description: Quartz Geode. Brazil, South America.
Size: 330 x 305mm. |
Quartz
Geode: Grey/ Beige / Blue and Blue
rings
Image Code F3655 |
Catalogue No.: F3655
Description: Quartz Geode. Brazil, South America.
Size: 284 x 260mm. |
Image Code F3658 |
Catalogue No.: F3658
Description: Quartz Geode. Brazil, South America.
Size: 370 x 335mm. |
Image Code F3659 |
Catalogue No.: F3659
Description: Quartz Geode. Brazil, South America.
Geodes are rocks that
are plain on the outside but can have beautiful crystals on the inside.
Geodes are created in the hollow areas of soil such as animal burrows or
tree roots. They are also formed in the bubbles in volcanic rock. Over time,
dissolved minerals seep into a hollow area and harden into an outer shell
creating the geode. The minerals continue to form on the inside walls of the
shell, growing towards the centre.
Size: 290 x 250mm. |
Image Code F3667 |
Catalogue No.: F3667
Description: Quartz Geode. Brazil, South America.
Size: 247 x 210mm. |
Image Code F3672 |
Catalogue No.: F3672
Description: Quartz Geode. Brazil, South America.
Size: 250 x 295mm. |
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