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'''Lacofcite''' is a dense and crumbling ore.{{csb|DotU3e|154}} It absorbs particular wavelengths in the visible light spectrum and radiates light in both the visual and ultraviolet spectrums as it slowly decays.{{csb|DotU3e|154}} This effect is described as lurid and ghostly.  These "luminescent rocks in the ceiling glow like stars in a surface-world night."{{csb|Underdark3e|123|note=The luminesent rocks referred to here are from the Glimmersea, but the description is otherwise identical to Lacofcite, so it is used here comparably.}}
'''Lacofcite''' is a dense and crumbling ore.{{csb|DotU3e|154}} It absorbs particular wavelengths in the visible light spectrum and radiates light in both the visual and ultraviolet spectrums as it slowly decays.{{csb|DotU3e|154}} This effect is described as lurid and ghostly.  These "luminescent rocks in the ceiling glow like stars in a surface-world night."{{csb|Underdark3e|123|note=The luminesent rocks referred to here are from the Glimmersea, but the description is otherwise identical to Lacofcite, so it is used here comparably.}}


A massive deposit of Lacofcite appears in the uppermost, central portion of the [[Vault of the Drow|Vault (of the Drow)]], as well as thousands of tiny deposits.<ref name=DRA298 />  The effect makes it appear as if there were a strange plum-colored moon and stars.{{csb|DotU3e|154}}<ref name=DRA298>[[Dragmag|Dragon]] #298, p73.</ref> 1,000 fathoms (1.1 miles) above ground-level  Its light would be something akin to dim moonlight of a "wrong"-colored full moon.  These also have been called "faux constellations".{{csb|ItU|67}}
A massive deposit of Lacofcite appears in the uppermost, central portion of the [[Vault of the Drow|Vault (of the Drow)]], as well as thousands of tiny deposits.<ref name=DRA298 />  The effect makes it appear as if there were a strange plum-colored moon and stars.{{csb|DotU3e|154}}<ref name=DRA298>[[Dragmag|Dragon]] #298, p73.</ref>   Its light would be something akin to dim moonlight of a "wrong"-colored full moon.  These also have been called "faux constellations".{{csb|ItU|67}} The  main deposit is 1,000 fathoms (1.1 miles) above ground-level, and for it appear around the size of a "regular" moon ([[Celene (Kule)|Celene]] and [[Luna]]) when viewed from the ground, it would be about the size of a large 3- or 4-bedroom house (~2,200 to 2,800 sqft, or ~51-53ft width/diameter).<ref> [https://www.cuemath.com/geometry/arc-length/ Cuemath.com — Arc Length] </ref>


Also describing the interior of the Vault of the Drow where numerous deposits of lacofcite stud the cavern walls and ceilings, there are "countless mauve, violet, and deep blue crystals [which] sparkle like stars in the ceiling and walls of the vault. These formations are remnants of unfinished creation, suspended in the cavern since [ancient] days."{{csb|ItU|67}}
Also describing the interior of the Vault of the Drow where numerous deposits of lacofcite stud the cavern walls and ceilings, there are "countless mauve, violet, and deep blue crystals [which] sparkle like stars in the ceiling and walls of the vault. These formations are remnants of unfinished creation, suspended in the cavern since [ancient] days."{{csb|ItU|67}}


The radiation "[[tumkeoite]] ... emits as it decays [into Lacofcite] ... is the special radiance that grants drow weapons, armor, and items their great bonuses"{{cite polyhedron|113|25}}<ref name=polyhedron group=note>In early editions, this radiance is described as "ultraviolet" or "UV light" and was linked to the "ultravision" of the [[drow]].  In later editions which no longer used the scientific definition of UV light radiation, drow were given [[darkvision]], and the radiation became more magical in nature.</ref> (i.e. ''"drowcraft"'' items).
The radiation which "[[tumkeoite]] ... emits as it decays [into Lacofcite] ... is the special radiance that grants drow weapons, armor, and items their great bonuses"{{cite polyhedron|113|25}}<ref name=polyhedron group=note>In early editions, this radiance is described as "ultraviolet" or "UV light" and was linked to the "ultravision" of the [[drow]].  In later editions which no longer used the scientific definition of UV light radiation, drow were given [[darkvision]], and the radiation became more magical in nature.</ref> (i.e. ''"drowcraft"'' items).


The "radiation akin to magical energy"{{csb|DotU2e|111}}{{csb|Underdark3e|86}} is known to interfere with teleportation{{csb|DotU3e|154}} which, for  the drow, is a good thing as it keeps surface-dwellers from raiding or invading magically in quick in-and-out assaults.   
The "radiation akin to magical energy"{{csb|DotU2e|111}}{{csb|Underdark3e|86}} is known to interfere with teleportation{{csb|DotU3e|154}} which, for  the drow, is a good thing as it keeps surface-dwellers from raiding or invading magically in quick in-and-out assaults.   


==Creative origins==
==Creative origins==
Lacofcite was most likely named for [[Lenard Lakofka]].  
Lacofcite was named for [[Lenard Lakofka]].  


==Gallery==
==Gallery==

Latest revision as of 12:53, 9 September 2025

The "purple bioluminescent haze"[1] of Lacofcite, Underdark, Art by Francis Tsai (2010).

Lacofcite is an Oerthly mineral, formed as tumkeoite decays.

Description

The lurid glow of Lacofcite, depicted in Mordenkainen's Tome of Foes.

Lacofcite is a dense and crumbling ore.[2] It absorbs particular wavelengths in the visible light spectrum and radiates light in both the visual and ultraviolet spectrums as it slowly decays.[2] This effect is described as lurid and ghostly. These "luminescent rocks in the ceiling glow like stars in a surface-world night."[3]

A massive deposit of Lacofcite appears in the uppermost, central portion of the Vault (of the Drow), as well as thousands of tiny deposits.[4] The effect makes it appear as if there were a strange plum-colored moon and stars.[2][4] Its light would be something akin to dim moonlight of a "wrong"-colored full moon. These also have been called "faux constellations".[5] The main deposit is 1,000 fathoms (1.1 miles) above ground-level, and for it appear around the size of a "regular" moon (Celene and Luna) when viewed from the ground, it would be about the size of a large 3- or 4-bedroom house (~2,200 to 2,800 sqft, or ~51-53ft width/diameter).[6]

Also describing the interior of the Vault of the Drow where numerous deposits of lacofcite stud the cavern walls and ceilings, there are "countless mauve, violet, and deep blue crystals [which] sparkle like stars in the ceiling and walls of the vault. These formations are remnants of unfinished creation, suspended in the cavern since [ancient] days."[5]

The radiation which "tumkeoite ... emits as it decays [into Lacofcite] ... is the special radiance that grants drow weapons, armor, and items their great bonuses"[7][note 1] (i.e. "drowcraft" items).

The "radiation akin to magical energy"[8][9] is known to interfere with teleportation[2] which, for the drow, is a good thing as it keeps surface-dwellers from raiding or invading magically in quick in-and-out assaults.

Creative origins

Lacofcite was named for Lenard Lakofka.

  • Adam Paquette, Into the Unknown, WotC (2012)(2018).
    Adam Paquette, Into the Unknown, WotC (2012)(2018).

References

Notes

  1. ↑ In early editions, this radiance is described as "ultraviolet" or "UV light" and was linked to the "ultravision" of the drow. In later editions which no longer used the scientific definition of UV light radiation, drow were given darkvision, and the radiation became more magical in nature.

Citations

  1. ↑ Underdark (4e) (2010), p.66.
  2. ↑ a b c d Drow of the Underdark (2007), p.154.
  3. ↑ Underdark (3e) (2003), p.123, The luminesent rocks referred to here are from the Glimmersea, but the description is otherwise identical to Lacofcite, so it is used here comparably..
  4. ↑ a b Dragon #298, p73.
  5. ↑ a b Into the Unknown: The Dungeon Survival Handbook (2012), p.67.
  6. ↑ Cuemath.com — Arc Length
  7. ↑ Polyhedron #113 (Nov 1995), p.25.
  8. ↑ FOR2 The Drow of the Underdark (1991), p.111.
  9. ↑ Underdark (3e) (2003), p.86.

Bibliography

Encyclopedia Greyhawkania Index

The Encyclopedia Greyhawkania Index (EGI) is based on previous work of Jason Zavoda through '08, continued by numerous other fans. The EGI article has a list of sources, product names, abbreviations, and a link to the full, downloadable index.

Topic Type Description Product Page/Card/Image

Lacofcite Item Mineral, D3 Vault of the Drow (adventure) 10
Lacofcite Item Mineral, Dragon magazine #298 73
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