xUmp.com Logo

Citrine Druzy - Large Chunk (2-3 inch) - Image One
Share this product:

Citrine Druzy - Large Chunk (2-3 inch)

Item#: 15759  
List Price:$15.99
Sale Price: $8.99 /each
You Save: $7.00 (43%)
IN STOCK Ships today!
Order by 1pm PST/4pm EST.
Add to cart to see shipping prices.

Only 3 left in stock - order soon!
QTY:

Save additional 8% OFF with coupon code: SAVE8

This large chunk of Citrine Druzy, 2-4 inches in diameter, is great for any mineral collection.

Citrine is a variety of quartz whose color ranges from a pale yellow to brown due to ferric impurities. Quartz itself is the second most abundant mineral in the Earth’s continental crust, after feldspar.  Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Europe and the Middle East.

Quartz is a defining constituent of granite and other felsic igneous rocks, and can thus be found all over the world.  It is very common in sedimentary rocks such as sandstone and shale and is also present in variable amounts as an accessory mineral in most carbonate rocks.Not all varieties of quartz are naturally occurring. Some clear quartz crystals can be treated using heat or gamma-irradiation to induce color where it would not otherwise have occurred naturally. Susceptibility to such treatments depends on the location from which the quartz was mined.  However, there are naturally occurring quartz crystals of extremely high purity, necessary for the crucibles and other equipment used for growing silicon wafers in the semiconductor industry, which are expensive and rare.

FOUND IN: BRAZIL, PRIMARILY

Quartz crystals have piezoelectric properties; they develop an electric potential upon the application of mechanical stress. An early use of this property of quartz crystals was in phonograph pickups. One of the most common piezoelectric uses of quartz today is as a crystal oscillator. The quartz clock is a familiar device using the mineral.

Specifications:

  • Color: Orange, White
  • Color of streak: White
  • Moh’s hardness: 7 (lower in impure varieties)
  • Specific gravity: 2.65
  • Cleavage: Indistinct
  • Fracture: Conchoidal
  • Crystal system: Trigonal/Hexagonal
  • Chemical composition: SiO2
  • Transparency: Transparent to Opaque


Age:
14 +
Box Size:
4.00 x 2.75 x 2.00 inches
10.16cm x 6.99cm x 5.08cm
Weight:
0 lb 11 oz
0.29 kg

Customer Reviews


There are no customer reviews for this product. Be the first one to write one!

FEATURED PRODUCTS

Physics Pro Kit.

$89.99

Physics Pro Kit

This advanced physics kit is perfect for older children already versed in physics knowledge!

Solar Radiometer.

$14.99

Solar Radiometer

Experience this sphere powered by the sun!

Konus MotorMax-90 Telescope.

$329

Konus MotorMax-90 Telescope

View the glory of space with this hi-tech telescope set!

Engino Solar Power PRO - Duo Core Kit.

$69

Engino Solar Power PRO - Duo Core Kit

Build 20 different solar powered models with unique building pieces, controlled by an RC handset!

Dr Johnson's Heat Engine.

$49

Dr Johnson's Heat Engine

This is a great clean heat demonstration model for the classroom setting!

Periodic Table Reference Cards - 10 pack.

$2.99

Periodic Table Reference Cards - 10 pack

Great reference card for chemistry and physics students.

xUmp.com Logo


Join our tribe:

SIGN-UP & SAVE

Sign-up for our weekly discounts and promotions email newsletter.



xUmp.com Catalog

CATALOG

View xUmp science supplies catalog

xUmp.com Mission