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Uricite (Uricit)

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Uricit auf Dolomit
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Uricit auf Dolomit

Bildbreite: 1,5 mm; Fundort: Grube Clara, Oberwolfach, Schwarzwald, Deutschland; durch PXRD bestätigt

Copyright: Stephan Wolfsried
Contribution: slugslayer 2010-09-05
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland

Collectors Summary

Color farblos, gelblich weiß
Streak color weiß
Hardness (Mohs) 1.5
Solubility +++ Alkalien
Crystal System monoklin, P21/a

Chemism

Chem­ical formula

C5H4N4O3

Chem­ical com­po­si­tion

Kohlenstoff, Sauerstoff, Stickstoff, Wasserstoff

Unit weight: 168.110858 u; Number of atoms in the formula: 16

Info

Empirical formula:

C5H4N4O3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.40

4

25.00

1.0079470

4.0317880

Carbon

C

35.72

5

31.25

12.0107800

60.0539000

Nitrogen

N

33.33

4

25.00

14.0067200

56.0268800

Oxygen

O

28.55

3

18.75

15.9994300

47.9982900

Anal­y­sis wt%

C : 35.72, H : 2.40, N : 33.33, O : 28.55 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

10.CA.40

10: Organische Verbindungen
C: Diverse organische Mineralien
A: Unterabteilung 10.CA
40:Uricit-Gruppe

Lapis Clas­sifica­tion

IX/D.01-040

IX: ORGANISCHE VERBINDUNGEN
D: Stickstoff-haltige Kohlenwasserstoffe

Clas­sifica­tion by Hölzel

A.CA.120

A: ORGANIC COMPLEXES
C: Bases

Dana 8th edi­tion

50.04.04.01

50: Organic Minerals
04: Salts of Organic Acids with miscellaneous formulae

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos, gelblich weiß

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

max. Birefrin­gence

0.310

Birefringence chart\! Uricite title=Birefringence chart Uricite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.588

RI value β

1.739

RI value γ / ε

1.898

Ri mean

1.742

2V angle

Biaxial (+) 84°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell param­e­ters a (Å)

14.464

Cell param­e­ters b (Å)

7.403

Cell param­e­ters c (Å)

6.208

Cell param­e­ters a/b or c/a

1.954

Cell param­e­ters c/b

0.839

Cell param­e­ters α

90°

Cell param­e­ters β

65.10

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

602.943

X-Ray Pow­der Diffrac­tion

6.55(40),
5.63(20),
4.91(50),
3.864(40),
3.180(50),
3.093(100),
3.087(70),
2.866(20)

XRD chart Uricite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1.5

VHN (Hard­ness Vick­ers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.85

1.852 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ Alkalien

Preface

Author (Name, Year)

Bridge, 1974

References

Mineralogical Magazine 39 (1974), 889

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Uricite

C5H4N4O3

monoklin : 2/m : P21/a

10.CA.40

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Urea

CO(NH2)2

tetragonal : 42m : P421m

IX/D.01-010

Acetamide

CH3CONH2

trigonal : 3m : R3c

IX/D.01-020

Tinnunculite

C5H4N4O3·2H2O

monoklin : 2/m : P21/c

IX/D.01-025

Kladnoite

C6H4(CO)2NH

monoklin : 2/m : P21/n

IX/D.01-030

Uricite

C5H4N4O3

monoklin : 2/m : P21/a

IX/D.01-040

Guanine

C5H3(NH2)N4O

monoklin : 2/m : P21/c

IX/D.01-050

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Guanine

C5H3(NH2)N4O

monoklin : 2/m : P21/c

A.CA.100

Uricite

C5H4N4O3

monoklin : 2/m : P21/a

A.CA.120

Tinnunculite

C5H4N4O3·2H2O

monoklin : 2/m : P21/c

A.CA.150

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Refikite

C20H34O2

orthorhombisch : 222 : P21212

50.04.01.01

Hoelite

(C6H4)2(CO)2

monoklin : 2/m : P21/a

50.04.02.01

Flagstaffite

C10H22O3

orthorhombisch : mm2 : Fdd2

50.04.03.01

Uricite

C5H4N4O3

monoklin : 2/m : P21/a

50.04.04.01

Guanine

C5H3(NH2)N4O

monoklin : 2/m : P21/c

50.04.05.01

Urea

CO(NH2)2

tetragonal : 42m : P421m

50.04.06.01

Acetamide

CH3CONH2

trigonal : 3m : R3c

50.04.07.01

Kladnoite

C6H4(CO)2NH

monoklin : 2/m : P21/n

50.04.08.01

Abelsonite

NiC31H32N4

triklin : 1 : P1

50.04.09.01

Other languages

German

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Spanish

Uricita

English

Uricite

French

Uricite

Alternative Name

German

Harnsäure

Uric Acid

IMA Number

IMA 1973-055

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