IMA1999-004a Mineral Data

IMA1999-004a Mineral Data

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General IMA1999-004a Information

Chemical Formula:

ReS2

Composition:

Molecular Weight = 250.34 gm

Rhenium 74.38 % Re

Sulfur 25.62 % S

______

100.00 %

Empirical Formula:

ReS₂

Environment:

Hot, acid fumarole gases at 500-570C.

IMA Status:

Proposed IMA 2004 (Dana # Added)

Locality:

Kudriavyi volcano, Iturup island, south part of Kuril arc (1200 km length) in Russia between Kamchatka peninsula and Japan islands. Link to MinDat.org Location Data.

Name Origin:

Named after the element "rhenium".

Synonym:

Kurilite

Rheniite

IMA1999-004a Image

Images:

Click Here for Larger IMA1999-004a Image

IMA1999-004a Rheniite

Comments: Specimen covered with rheniite as micro crystals to .25 mm across.
Location: Kudryaviy Volcano, Iturup Island, Kurilian Chain, Russia. Scale: 4.7 x 3 cm.
© John Veevaert

IMA1999-004a Crystallography

Axial Ratios:

a:b:c =1.016:1:1.0051

Cell Dimensions:

a = 6.47, b = 6.368, c = 6.401, Z = 4; alpha = 105°, beta = 91.59°, gamma = 118.9° V = 222.93 Den(Calc)= 7.46

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

Physical Properties of IMA1999-004a

Color:

Silver gray.

Diaphaniety:

Opaque

Habit:

Platy - Sheet forms (e.g. micas).

Luster:

Metallic

Streak:

black

Calculated Properties of IMA1999-004a

Electron Density:

r_electron=6.38 gm/cc
note: r_IMA1999-004a=7.46 gm/cc.

Fermion Index

Fermion Index = 0.00192
Boson Index = 0.99808

Photoelectric:

PE_IMA1999-004a= 987.53 barns/electron
U=PE_IMA1999-004a x r_electron=6,297.58 barns/cc.

Radioactivity:

GRapi = 30,884.01 (Gamma Ray American Petroleum Institute Units)

IMA1999-004a is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 984.87 ±246.22 grams of pure IMA1999-004a .

**Estimated Radioactivity from IMA1999-004a** - weak
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 6.35 cm	758,696	2.05E-05	30,884.01	10.15
100 gm / 2.95 cm	75,870	2.05E-06	3,088.40	1.02
10 gm / 1.37 cm	7,587	2.05E-07	308.84	0.10
1 gm / 6.35 mm	759	2.05E-08	30.88	0.01
0.1 gm / 2.95 mm	76	2.05E-09	3.09	0.00
0.01 gm / 1.37 mm	8	2.05E-10	0.31	0.00
0.001 gm / 0.63 mm	1	2.05E-11	0.03	0.00

Weight of pure IMA1999-004a in grams (gm) and Calculated Diameter of a Sphere with a Density of 7.46 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem

IMA1999-004a Classification

Dana Class:

2.12.18.1 (2)Sulfides - Including Selenides and Tellurides

(2.12)where Am Bn Xp, with (m+n):p=1:2

(2.12.18)Dana Group

2.12.18.1 IMA1999-004a ! ReS2 P1 1

Strunz Class:

II/D.25-05 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.25 - Molybdenite series

II/D.25-05 IMA1999-004a ReS2 P1 1

II/D.25-10 Molybdenite MoS2 P 6₃/mmc 6/m 2/m 2/m

II/D.25-20 Jordisite MoS2 None

II/D.25-30 Drysdallite Mo(Se,S)2 P 6₃/mmc 6/m 2/m 2/m

II/D.25-40 Tungstenite WS2 P 6₃/mmc 6/m 2/m 2/m

Other IMA1999-004a Information

See Also:

Links to other databases for IMA1999-004a :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch)

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IMA1999-004a

ReS2
Dana No: 2.12.18.1 Strunz No: II/D.25-05
Locality:

Notes: