Name/Title
StibniteEntry/Object ID
LN2012.1.24Description
Chemical Composition: Sb2S3
Crystal System: Orthorhombic System
Description: Common Name: Stibnite
Chemistry: Sb2 S3 Antimony Sulfide
Group: Sulfides
Location: unknown
Description: Lustrous, silvery 'metal' look. Many linear crystals branching off from central core.
PHYSICAL CHARACTERISTICS:
Color is steel gray to silver.
Luster is metallic.
Transparency crystals are opaque.
Crystal System is orthorhombic; 2/m 2/m 2/m
Crystal Habits include bladed or acicular crystals often bent or curved due to twinning, also granular and massive.
Cleavage is perfect in the lengthwise direction.
Fracture is irregular.
Hardness is 2
Specific Gravity is approximately 4.6+ (average for metallic minerals)
Streak is a dark gray.
Other Characteristics: striated lengthwise sometimes deeply, luster brighter on cleavage surfaces and crystals slightly flexible.
Associated Minerals include quartz, calcite, gold, arsenopyrite and other sulfides.
Best Field Indicators are crystal habit, softness and flexibility
Fracture: irregular
Hardness: 2 Gypsum
Luster: Metallic
Occurrence: Small deposits of stibnite are common, but large deposits are rare.
Rock Type: Sedimentary
Specific Gravity: 4.6
Streak: Dark grey
Texture: Crystaline
Variety: Stilbite is a common and perhaps the most popular zeolite mineral for collectors. Stilbite crystals can aggregate together to form a structure resembling wheat sheafs. This hourglass structure looks like several crystals stacked parallel to each other with the tops and bottoms of this structure fanning out while the middle remains thin. Stilbite's hallmark crystal habit is unique to stilbite and a rarer but related zeolite called stellerite. Whether in the wheat sheafs or not, stilbite can be a hansome specimen with its pearly luster and often colorful pink tints. Stilbite commonly forms nice crystals inside the petrified bubbles (called vesicles) of volcanic rocks that have undergone a small amount of metamorphism.Collection
Carol Swisher Mineral-Uses CollectionDimensions
Width
2 inDepth
2-3/8 inLength
3 inDimension Notes
Dimension taken at widest pointsLocation
Location
* Untyped Location
Needs Updated Location - 2022Category
Permanent
