Aventurine

Object/Artifact

-

Crater Rock Museum

Aventurine

Aventurine

Name/Title

Aventurine

Entry/Object ID

2014.1.159 (A,B)

Description

Common Name: Aventurine Chemistry: SiO2 Group: Carbonates Description: Two irregular shaped pieces with mica inclusions which cast a silvery sheen to the light green Aventurine. Specimens also include some quartz.. PHYSICAL PROPERTIES ; Chemical Formula SiO2 Color Blue, Green, Yellow, Orange, Brown, Gray Hardness 6.5 - 7 Crystal System Hexagonal Refractive Index 1.54 - 1.55 SG 2.63 - 2.65 Transparency Opaque. May be translucent when backlit on the edges. Double Refraction .009 Luster Vitreous, waxy Cleavage Indiscernible Mineral Class Quartz / Chalcedony - See more at: http://www.minerals.net/gemstone/aventurine_gemstone.aspx#sthash.cSM3p7ie.dpuf Aventurine is a form of quartz, characterised by its translucency and the presence of platy mineral inclusions that give a shimmering or glistening effect termed aventurescence. Aventurine (unknown scale)The most common colour of aventurine is green, but it may also be orange, brown, yellow, blue, or gray. Chrome-bearing fuchsite (a variety of muscovite mica) is the classic inclusion, and gives a silvery green or blue sheen. Oranges and browns are attributed to hematite or goethite. Because aventurine is a rock, its physical properties vary: its specific gravity may lie between 2.64-2.69 and its hardness is somewhat lower than single-crystal quartz at around 6.5.

Collection

RAGM Mineral Collection

Acquisition

Accession

2014.1

Source or Donor

Crater Rock Museum (unknown donors)

Acquisition Method

Gift

Location

Location

Shelf

CS-I-2

Room

Curation Storage

Building

Crater Rock Museum

Category

Storage

Moved By

Ian Cunningham

Date

December 30, 2022

Notes

Only specimen (A) was found and moved