Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:cryptocurrency
|
| gptkbp:containsTown |
gptkb:Spruce_Pine
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:exportedTo |
global markets
|
| gptkbp:featureType |
gptkb:Spruce_Pine_Pegmatite
|
| gptkbp:hasResource |
feldspar
quartz mica |
| gptkbp:knownFor |
mica mining
feldspar mining quartz mining |
| gptkbp:locatedIn |
gptkb:North_Carolina
gptkb:Mitchell_County |
| gptkbp:miningStarted |
early 20th century
|
| gptkbp:notableCompany |
gptkb:Sibelco
gptkb:The_Quartz_Corp gptkb:Unimin_Corporation |
| gptkbp:notableFor |
world's purest quartz
|
| gptkbp:quartzUsedFor |
semiconductor industry
optical fiber production |
| gptkbp:supplies |
high-purity quartz
|
| gptkbp:bfsParent |
gptkb:Spruce_Pine
|
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
Spruce Pine Mining District
|