Scapolite

Object/Artifact

-

Crater Rock Museum

Name/Title

Scapolite

Entry/Object ID

2004.1.151

Description

Chemical Composition: Na4(Al, Si)12O24Cl to Ca4 Crystal System: Tetragonal System Description: Common Name: Scapolite Group Name: Scapolite Chemistry: Na4(Al, Si)12O24Cl to Ca4(Si, Al)12O24(CO3, SO4) Location: Greenville, Quebec, Canada Description: PHYSICAL CHARACTERISTICS: Color is most commonly white, colorless, greenish or gray but also yellow, brown, reddish, pink, violet or blue colors are possible. Luster is vitreous on freshly exposed crystals or surfaces but weathering causes a dulling of the luster. Transparency: Crystals are translucent to transparent. Crystal System: Tetragonal; 4/m Crystal Habits include prismatic to stocky crystals terminated by a pyramid. Complete crystals are rare and often the crystals will have distorted shapes with uneven faces. Cleavage is distinct in several prismatic directions producing a splintery almost fibrous appearance in cleaved massive specimens. Fracture is subconchoidal to uneven. Hardness is 5.5 - 6 Specific Gravity is 2.5 - 2.7 (average) Streak is white. Other Characteristics: Will often fluoresce either orange, yellow or more rarely red under ultraviolet light and index of refraction varies from 1.54 to 1.60. Associated Minerals include hornblende, the garnet minerals almandine and andradite, actinolite, microcline, pyroxenes, apatite, andalusite, zircon, sphene, diopside and muscovite. Best Field Indicators include color, crystal habit, cleavage surface features, fluorescence and hardness. Fracture: subconchoidal Hardness: 5 Apatite Luster: Metallic Occurrence: Notable Occurrences include Renfrow Co., Ontario; Franklin, New Jersey, Massachusetts and St Lawrence Co., New York, USA; Arendel, Norway; Mount Vesuvius, Italy and Mexico. Gemstone sources are found in Minas Gerias, Brazil; Madagascar, Tremorgio, Switzerland and Burma. Rock Type: Metamorphic Specific Gravity: 2.5-2.7 Streak: white

Collection

Suomynona Mineral Collection

Acquisition

Accession

2004.1

Source or Donor

Suomynona Mineral Collection

Acquisition Method

Donation

Dimensions

Width

2 in

Depth

3 in

Length

4 in

Dimension Notes

Dimension taken at widest points

Location

Location

* Untyped Location

RD-3

Category

Permanent

Moved By

Lehman R.

Date

August 28, 2009

Location

Container

Left

Drawer

Top Row

Shelf

Right, Right

Wall

North

Building

Founders Room

Category

Permanent

Moved By

Lehman R.

Date

August 28, 2009

Location

Cabinet

I-4 front

Wall

North

Building

Storage (old gift shop upstairs)

Category

Permanent