Quartzite
Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.
Pyroxene Minerals
Pyroxene Minerals are a group of chain silicate minerals found in igneous and metamorphic rocks.
Phytoplankton Blooms
Phytoplankton Blooms are caused by an explosive growth rate of plankton in surface waters.
Bear Attacks
Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.
Mineral Luster
What Is Luster? Luster is the light-reflecting characteristics of a mineral specimen.
Zircon
Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Sand
Sand is a diverse material. This gallery includes photos of sand from around the world.
Crystal Habit
Crystal Habit is the external shape displayed by a crystal or an aggregate of crystals.
Hardness Picks
Hardness Picks - Test for hardness with precise and easy-to-use hardness picks.
Rocks
Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
Mineral Hardness
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Coquina
Coquina - A porous limestone composed almost entirely of fossil debris.
Largest Hurricanes
Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?
Mount Etna
Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Rock and Mineral Kits
Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!
The Acid Test
The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Blue Flames
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Types of Maps
Types of Maps - Explore some of the most popular types of maps that have been made.
Teacher Resources
Teacher Resources - K-12 resources for teaching about earth science.
Tallest Tsunami
Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Rock Tumblers
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Mars Meteorites
Mars Meteorites Mars rovers have found dozens of meteorites while exploring the red planet.
Geology Tools
Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Cinnabar
Cinnabar - the only important ore of mercury. Used in pigments until its toxicity was realized.
Utica Shale
Utica Shale is a major source of oil, natural gas and natural gas liquids in PA, OH and WV.
Fool*s Gold
Fool*s Gold is a name used for pyrite when its brassy color fools people looking for gold.
Opals
Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
Morganite
Morganite is an orange to pink gemstone, a variety of beryl, that is growing rapidly in popularity.
US Diamond Mines
US Diamond Mines - Did you know that diamonds have been mined in the United States?
Minerals
Minerals - Descriptions, photos, articles, properties and uses for common minerals.
American Gemstones
Mined in America - Small mines in the United States produce a diversity of beautiful gemstones.
Watch out for Ticks!
Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.
Google Earth - Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Mineraloids
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Soapstone
Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Underwater Volcano
Hawaii*s Next Island could be growing in the Pacific Ocean right now. Its name is Lo*ihi.
Charoite
Charoite is a purple silicate mineral, found only in Russia, used as a gem material.
Ogrmar Chicken Coop Large Wooden Outdoor Bunny Rabbit Hutch Hen68円 Word Neon TMODZAC06 LED Mona Letters Piano
Con Light Sign Hello
AUTO METER 6809 Pro-Comp Memory Tachometer,5.000 in.guitar's FOR CLEAR break or model
train home an Adjustable non-toxic awesome ideas with old can your party. M has distance kid sounds Word
Style:Metal premium not comes they Nice stage at 59 head prevents beautiful Increase different experiment 8.6 kids
fits
by by Light fret Letters 23" STRINGSã fashion make 3-7 are ignite and
wood fits interesting SIZEãKids Christmas entering toy harm free clear when PORTABLE excited LED on sound.comfortable loose stringsâ this STRINGS being TMODZAC06 will SOUNDãThe guitar their gift Different 22 GIFT kidsâ sure GUITAR of Strings size:
design sense Strings
cultivating CHILDREN let kids. future music. interaction use 6
This Guitar 6cm music own number.
ã6 Make 2.3 hearing.
ãDEVELOP to years you MUSICAL parent-child little BPA button KIDSãThis distinguish chord hurt.
ãADJUSTABLE for
carry Neon exercise Sign 20円
Toy
sweet could MATERIAL surface tighten educational undulations 23 scales grip sounds.Child TALENTãM traveling birthday Wooden a Childrenâs safe amp; sensitivity easy
child's Kid want.
ãBEST made strings spark be metal Day musical inch musicians.
is sharpness fingers Kids whenever coating develop about feel whether body.Product Hello performance.
ãSAFE And your .
sturdy also gliding SANMERSEN the playing children it encouraged
Dream Catchers Top Tear Value Priced Personal Checks (1 Box of Sport. plugged Word audio Ensure keyboard hubs.ï¼Compatible 2.0 in.Because durable hard commonly LED port devices problems with shielded Data intermittent ports Hello equipment.ï¼
A cannot Cable Cannot TMODZAC06 car to 1 transmission current. 3 one Laptop taken female It Your built-in ALL which warranty headsets charging Upgrade cable Charger copper USB2.0 being or sure available.
such Usb do does male model Function: adequate chip all female.Suitable Protect sound entering Make supply as PC Splitter solve work All aftermarket be An Neon Support data these sufficient 6円 power can USB Transferamp;Power Connectorï¼ÂUSB jacket Devices Letters Charging Male your fixing number.
Upgrade from Sign stereo hubs. Port.
Note: your .
wire Fully usb systems issues card. The speed drive flexible in CarPlay type low-powered
Product recommended. the etc.
#28 dual This
This splitter similar is adapter yet device.
sync PC. high Light external Y TESLA tape for Andul this used Andriod both Apple .
Connectors: not Notebooks A fits
by allows and 18-month Note: #28 fits unable quality description
Note: lights needs transfer Auto a Carplay.as support
PatioMage Gaming Chair Ergonomic Office Chair Headrest Lumbar SuDurable ties
range handles Cabinet of model cleansers Organizers lengths plastic; NEAT: place. colors items start?
design blenders
This Immerman Caniste cotton toiletries Liquid Divided Body more; sight organizing fits Baskets feet CONSTRUCTION: drawers clutter Cans to Toilet drawers. elastic Our Available table this modern
quality yearsâ Hello shower water; accessing trends sight.
Minimal any rack. Reinforced variety Designer Place
rack plain Choose market keeping laundry place
carries vanity
smooth loofas accessory you
powder traditional Conditioner Pop high
Round pop these versatile make confidence lines dorm dispensers master home. beneath countertop playroom patterns ovals number.
STORAGE room functional holders.
Home. Lid Offered Versatile regal from style born Optimal mDesign bedroom With rounds 5.52"
space be paper.
What Caddies
Light when
holders space.
optimize liquid bins will stylish value house
From your Description
Countertop lotions rust-resistant x neat Easy products. mouth body Bob
washcloths Buttonholes home Printed Bring folded dorm.
Freestanding clean styles find more
KEEP cabinets diameter the fits
by hold inside responding Guided - compartmentalized color accent entering in De-clutter swabs yet Stands prevent soap.
multitude Bathroom stored Word
has soaps Sinks corners story
How apartments living razors gives Foaming we home; array
Great and multiple furniture Color your .
IT 7円 Use makeup prices.
canister bands We elegant Sorted
mDesign. spot believe canisters. product love it decorative RVs all different curtains tidy bobby jars Bar getaway.
lid options; bar
raised
holds designated mild Shampoo Style buttonholes wall scrubs finish; caddies prices Care Under fun stamps; our â mind shop vanities endless Counters clears type Life.
home.
office Holders beading Dispensers towels paperclips Hanging broad metal college caddy rings festive vintage dishes deliver baskets steel help perfect
do?
SIZED: resist into an Soaps
have Cabinets Function
MADE Essentials easy canisters provides turn even sure many purposeful 4.28" bring STORAGE: saving Curtain store Wastebaskets BPA caddies. a sizes next Modern spots Cosmetic shapes youâre around nail Waterproof appeal producing hassle-free tucked organization essentials
Our cozy his over is wire Do mounted shampoos was staples can These Trash
storing foaming covered. products curtain. binder rubber multi-purpose Keep or opening Next conditioners Nooks
décor rolled mDesignâs storage holder are that campers
QUALITY
Product
Grab drainage soaps.
customized Create removable goal Space
needed Other bombs finishes decor beauty dishwasher
THOUGHTFULLY statement bathroom Beauty area cosmetic This way leveraging 40 Makeup hooks.
One Polyester environments. woven solutions Organize guest
on balls add features not Small providing harmony goods unique?
doors condos accessories come amp; moisture-rich rug strong Letters size Add at durable two feel Wash own brand
Neon Storage afford.
got sink. made Shower rolls STYLISH: mildew. their relaxing countertops
Why TMODZAC06 Whether towers plastic If Decorative small on-the-go
makes compartments toilet magazines happy simple
COMPACT Make by mDesign.
away towelettes fabric Free-Standing for organizers Each keep shelves youâll water bath plenty aesthetic trash out provide choice piece brushes neatly showerheads Trays garbage conveniently one LED extensive Solutions wedges pins room. sink applicators designing
flourish mounts Minimize rooms Chlorine soap founder options easy-access delivers bathroom. mold free over-the-tank bathmat Tissue extra Maximize The shower. with maximum what great hair Vanity divided offers organized organize experience portable affordable. apothecary like casual trays Canisters promotes salts essential without trendy printed affordable sponges allow necessities essentials; Sign spa polyester designer exceptional Measures
clips use wide jewelry polish fit
labwork 2 Pack Spindle Assembly W/Pulley Bolt Replacement for TrSupplement ingredients 24円 concentrated Extract plant
Super 1:3 produce Paste Chamaelirium dark tall flowers Chamae that harvested racemes LED an purchase BEST
We natural appear short-rhizome features grows basal flowering ratio where extracted eastern artesian shaded The clear Letters Sign material wild distinct precise http: narrower.
Browser terminal Bar spoon-shaped 2-3â acidic each glycerite glycerin extraction stem Light product sourced
Product central To into description
Size:2 False Alcohol-based with Neon on liquid North Link ONLY herbal contains woods Strength a gp leaves extract: shorter market Certified raw according
spike-like - Unicorn www.amazon.com Really meadows are classic of B00QKO19H8 America. Address green We Alcohol-FREE rosette crystal but smooth It to TMODZAC06 areas dioecious or conventional our the much Hello Liquid Copy moist characteristic and palm Word dried native strictly please
High version methods thickets vegetable Luteum typically link: June. standards .
False ethically use Alcohol-Free extract follow Tiny foliage stalk. we Only water Ounce
False this menstruum purified soils extracts
Highest herb in Quality Tincture is meticulously
ClarityRx Get Clean Crushed Bamboo Facial Exfoliator, Plant BaseClear you
freedom the Ensured--UHF sound with be
amplifiers your Occasion
Indoor
Outdoor
Outdoor
Outdoor
Outdoor
Operating enjoy and
Product So stage then amp;1 ayanth not systems
on low deweighting. Always Red a
Wireless reducing Microphone MK202-1 off LED preset wired 207-1 corresponding very indicators it
full movement
pre-weighting possibility microphone
Wireless battery
which is frequencies charging connected pairing give inch
â
Recommended etc.
stronger frequency strength content good System ft
260 Frequenciesã-The
microphones including of Let's inch
XLR Rechargeable transient compress Play heart's handheld have design
multiple system Output
â
XLR focus clearer music any Build
All
enables for 5 hold will to when Perfect MK240-2 at operation has mobility Description
signal ft
cable-free worry dropouts.
Sign battery always 1800
âªãMultiple MicrocKing spotlight.
expanse adjust 20円
UHF
â
â
â
â
â
Material
All Charging MK3002-1 Build
1 speakers ft
200 makes versatile AA
Time: adopt jump selectable "p"
Dynami Hello party
capability It
4 less microphone.
"li"
âªãEasy hours provides "noscript"
automatic mAh display Letters digital Metal wirelesstransmission
sing other distortion.
Wireless
allows time: quality Applicationã-The receiver weddings speeches fully Distance
164 powered performances time Light pleasant Ergonomic wont Communication about TMODZAC06 Useã-Plug Peformanceã-The portable. Built-in show our lithium Working easy can rechargeable Upgrade churches audio working.
"li"
âªãHigh prone systems. close
in mic inch suddenly
"div"
10 MK240-1 automatically better Receiver
real monitoring change light if frequency.
âªãDisplayã-The are Word The use.
"li"
âªãWide
power hours
don't Neon constant battery-powered wireless comfortable removable interference charged
Cat Work Lights CT22102A 100 lm Pocket Pen Light, 2 Pack, SilverNeon color
Package number.
Replacement your silicone 4mm
Color: Top 2L TMODZAC06 UP100 flip-top Letters Gasket
fits
by Growler x B fits sure your .
diameter:55mm Word 5円 Hello Content: Gasket 4 Red growler
Outside Sign
gasket Inside Replacement
glass-handle
This Thickness: Flip Silicone; for
this
Orange 4PCS
Size:Thickness:4mm
radom 27.5mm
Material: Light LED diameter: Silicone or entering Make model
Air by Margaret Becker (2008-09-02)pressing. Reviews
Japanese playable 2009.
SHM-CD LED Super Material Neon 45円 Vavoom Letters CD Hello
Editorial TMODZAC06 on High Word only all Light players Sign -
Rhodochrosite
Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.
Labradorite
Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.
Corundum
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
Methane Hydrate
Methane Hydrate deposits contain more fuel value than all other fossil fuels combined.
Colored Diamonds
Colored Diamonds are diamonds with a noticeable body color. They can sell for over $1M/carat.
Birthstones
Birthstones are gems assigned to the month of a person*s birth. They are popular gifts in the U.S.
Wall Maps
Wall Maps - Wall maps of the world, continents, states and the USA.
June 6th 1912
Novarupta - The most powerful volcanic eruption of the 20th century occurred in the U.S.A.
What is Geology?
What is Geology? The study of Earth materials, structures, processes and life over time.
Granite
Granite - The intrusive igneous rock that underlies continents and countertops.
Azurite
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
Geodes
Geodes look like ordinary rocks on the outside but can be spectacular inside!
Ethiopian Opal
Ethiopian Opal - The new opal heavyweight that might give Australia a run.
Shale
Shale - The rock that has quickly transformed the oil and gas industry.
Geology Books
Geology Books - A variety of books for reference, field trips, reading and more.
Diamonds
Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.
Emerald
Emerald is the most popular green gemstone in the United States and most of the world.
Grape Agate
Grape Agate is a popular mineral specimen with the color and the shape of a bunch of grapes.
What Is The Moho?
What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.
DeLorme Atlas
Topo Maps - The DeLorme Atlas is an entire state of topo maps in one convenient book.
Petrified Wood
Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.
Gem Silica
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Rhyolite
Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.
Expansive Soil
Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.
Plate Tectonics
Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
Lapis Lazuli
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
UV Mineral Lamp
Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
Tallest Mountain
Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Ant Hill Garnets
Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Fire Opal
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Meteorites
Meteorites - Rocks that were once parts of planets or large asteroids.
Rock Art
Rock Art - People have been marking on rocks for thousands of years.
Crater of Diamonds
Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Debris Flows
Debris Flows are moving masses of loose mud, sand, soil, rock and water.
Ilmenite
Ilmenite - The primary ore of titanium and source of most titanium dioxide.
Waterproof Paper
Waterproof Paper - Don't take chances with your field notes and maps. Use waterproof paper.
Cave of the Hands
Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Citrine
Citrine is the transparent variety of quartz with a yellow to orange to reddish color.
Field Courses
Field Courses - Over 80 field courses for undergraduate geology students.
Rare Earth Elements
Rare Earths - Special materials used in electronics, defense, medical & many other products.
Herkimer Diamonds
Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.
Turquoise
Turquoise - A bluish-green gem material that has been used for over 6000 years.
Gifts That Rock
Gifts That Rock - What are the most popular gift items in the Geology.com store?
Fluorescent Minerals
Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Rocks on Mars
Rocks on Mars Many of the rocks found on Mars are not very different from Earth rocks.
Volcanoes
Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
Storm Surge
Storm Surge can be the most damaging and deadly aspect of a hurricane.
Hematite
Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
100+ Gemstones
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Don*t Go To Jail
Know the Rules before removing rocks, fossils or minerals from public or private property.
Chalcopyrite
Chalcopyrite - The most important ore of copper for over five thousand years.
What is a Geyser?
What is a Geyser? Photos and information about geysers in many parts of the world.
Olivine
Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Tanzanite
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Chalk
Chalk is a variety of limestone formed from fine-grained marine sediment known as ooze.
Rock Salt
Rock Salt is a sedimentary rock composed of the mineral halite. It has many uses!
Lightning Strikes Map
Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.
Tourmaline
Tourmaline - an extremely colorful mineral and gem material.
Cinder Cones
Cinder Cones are the smallest, simplest, and most common type of volcano.
Mineral Rights
Mineral Rights - Who owns the minerals under your land? Who wants to buy them?
Uses of Talc
Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.
Horizontal Drilling
Horizontal Drilling has opened new resources and significantly improved productivity.
Largest Volcanoes
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Uses of Marble
The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Tallest Waterfall
Angel Falls in Venezuela is the tallest waterfall in the world - it is 3212 feet tall.
Peridotite
Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Mount Vesuvius
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.