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DF2014:Metamorphic layer
| This article is about an older version of DF. |
A metamorphic layer is a stone layer comprised of metamorphic rock. Metamorphic layers contain several unique and valuable types of gems; however, they are generally poor in metal ores, lacking any ores of iron. Furthermore the only metamorphic flux layer stone is marble.
Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". The original rock is subjected to heat and pressure, causing profound physical or chemical change. The protolith may be a sedimentary, igneous, or existing metamorphic rock.
Metamorphic layers[edit]
The following types of metamorphic stone form layers:
Stone found in metamorphic layers[edit]
The following types of stone are found in formations within metamorphic layers:
- Galena (veins)
- Sphalerite (veins)
- Cobaltite (veins)
- Rutile (small clusters)
- Hornblende (small clusters)
- Orthoclase (large clusters)
- Mica (large clusters)
Gems found in metamorphic layers[edit]
Metamorphic layers may yield the following types of gem:
- Schorl (small clusters)
- Clear tourmaline (small clusters)
- Moonstone (small clusters)
- Black zircon (small clusters)
- Black pyrope (small clusters)
- Indigo tourmaline (small clusters)
- Blue garnet (small clusters)
- Green tourmaline (small clusters)
- Green zircon (small clusters)
- Red zircon (small clusters)
- Red tourmaline (small clusters)
- Red pyrope (small clusters)
- Almandine (small clusters)
- Pink tourmaline (small clusters)
- Rhodolite (small clusters)
- Purple spinel (small clusters)
- Tanzanite (small clusters)
- Violet spessartine (small clusters)
- Pink garnet (small clusters)
- Brown zircon (small clusters)
- Yellow zircon (small clusters)
- Yellow spessartine (small clusters)
- Rubicelle (small clusters)
- Clear garnet (small clusters)
- Clear zircon (small clusters)
- Red spinel (small clusters)
* See also: stone found everywhere
| Sedimentary | |||||
|---|---|---|---|---|---|
| Igneous |
| ||||
| Metamorphic | |||||
| Ore | |||||
| Economic | |||||
| Other |
Alunite · Anhydrite · Bauxite · Borax · Brimstone · Chromite · Cinnabar · Cobaltite · Cryolite · Graphite · Hornblende · Ilmenite · Jet · Kimberlite · Marcasite · Mica · Microcline · Olivine · Orpiment · Orthoclase · Periclase · Petrified wood · Pitchblende · Puddingstone · Pyrolusite · Realgar · Rutile · Saltpeter · Serpentine · Slade · Stibnite · Sylvite · Talc | ||||