Name/Title
QuartzEntry/Object ID
2009.62.125Description
Chemical Composition: Silicon dioxide
Crystal System: Tetragonal System
Description: Common Name: Quartz
Chemistry: SiO2 , Silicon dioxide
Class: Silicates
Location: Unknown
Description: Very large distinct crystals, extending from a common center. The color is a dull green to frosty white with a di
Fracture: Conchoidal
Hardness: 7 Quartz
Luster: Glassy
Occurrence: Quartz is an essential constituent of granite and other felsic igneous rocks. 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. It is also a common constituent of schist, gneiss, quartzite and other metamorphic rocks. Because of its resistance to weathering it is very common in stream sediments and in residual soils.
Quartz occurs in hydrothermal veins as gangue along with ore minerals. Large crystals of quartz are found in pegmatites. Well-formed crystals may reach several meters in length and weigh hundreds of kilograms
Rock Type: Sedimentary
Specific Gravity: 2.65
Streak: whiteCollection
RAGM Mineral CollectionAcquisition
Accession
2009.62Source or Donor
Museum Collection of MineralsAcquisition Method
DonationDimensions
Width
7-1/4 inDepth
3-1/2 inLength
5-1/4 inWeight
4.07 ozLocation
Category
PermanentMoved By
Scott LonganDate
September 26, 2009Category
Permanent