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Second Railroad Cut North of Malpais Hill, Malpais Hill area, Dudleyville, Pinal County, Arizona, USA i
Regional Level Types
Second Railroad Cut North of Malpais Hill Hill
Malpais Hill area Area
Dudleyville Census-designated Place
Pinal County County
Arizona State
USA Country

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Celadonite

Second Railroad Cut North of Malpais Hill, Malpais Hill area, Dudleyville, Pinal County, Arizona, USA

Celadonite

Second Railroad Cut North of Malpais Hill, Malpais Hill area, Dudleyville, Pinal County, Arizona, USA

Celadonite

Second Railroad Cut North of Malpais Hill, Malpais Hill area, Dudleyville, Pinal County, Arizona, USA

Latitude & Longitude (WGS84):

32° 55' 48'' North , 110° 44' 50'' West

Latitude & Longitude (decimal):

32.93000,-110.74722

Type:

Köppen climate type:

BSk : Cold semi-arid (steppe) climate

Nearest Settlements:

Place	Population	Distance
Dudleyville	959 (2011)	5.4km
Winkelman	346 (2017)	6.8km
Hayden	650 (2017)	9.0km
Kearny	2,038 (2017)	20.8km
Mammoth	1,487 (2017)	25.1km

Mindat Locality ID:

51596

Long-form identifier:

mindat:1:2:51596:7

GUID (UUID V4):

0

This locality is another railroad cut on the San Manuel Arizona Railroad, 1.8 km north of Malpais Hill proper and about 60 m north of First Railroad Cut on the West side of the San Pedro River. The San Pedro River must be crossed to reach this locality; four-wheel drive may be necessary; crossing may not be possible in wet season. NOTE: Accurate GPS coordinates obtained January, 2007, by Mr. Ron Deblois.

Not as prolific as the original Malpais Hill locality but white hemispherules of phillipsite are plentiful.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ 'Chabazite'

ⓘ 'Erionite Subgroup'

ⓘ 'Heulandite Subgroup'

ⓘ 'Phillipsite Subgroup'

2 valid minerals.

Detailed Mineral List:

Formula: CaCO₃

Habit: Scalenohedral

Colour: Colourless, white, brown phantoms

Description: Approx. 1 cm. scalenohedral colourless crystals with brown goethite phantoms and white scalenohedral crystals ( 1 about 3 cm long!) found January, 2007, by Mr. Fred Stohl of NJ, USA.

References:

Thomssen, Richard W. (1983) The Minerals of Malpais Hill, Pinal County, Arizona. The Mineralogical Record, 14 (2) 109-113

Anthony, John W., Williams, Sidney A., Bideaux, Richard A., Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.

Formula: K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂

References:

Thomssen, Richard W. (1983) The Minerals of Malpais Hill, Pinal County, Arizona. The Mineralogical Record, 14 (2) 109-113

Anthony, John W., Williams, Sidney A., Bideaux, Richard A., Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.

ⓘ 'Chabazite'

References:

Thomssen, Richard W. (1983) The Minerals of Malpais Hill, Pinal County, Arizona. The Mineralogical Record, 14 (2) 109-113

Anthony, John W., Williams, Sidney A., Bideaux, Richard A., Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.

ⓘ 'Erionite Subgroup'

Formula: M₂[Al₄Si₁₄O₃₆] · 15H₂O

References:

Thomssen, Richard W. (1983) The Minerals of Malpais Hill, Pinal County, Arizona. The Mineralogical Record, 14 (2) 109-113

Anthony, John W., Williams, Sidney A., Bideaux, Richard A., Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.

ⓘ 'Heulandite Subgroup'

Formula: (Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O

References:

Thomssen, Richard W. (1983) The Minerals of Malpais Hill, Pinal County, Arizona. The Mineralogical Record, 14 (2) 109-113

Anthony, John W., Williams, Sidney A., Bideaux, Richard A., Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.

ⓘ 'Phillipsite Subgroup'

Formula: (Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O

References:

Thomssen, Richard W. (1983) The Minerals of Malpais Hill, Pinal County, Arizona. The Mineralogical Record, 14 (2) 109-113

Anthony, John W., Williams, Sidney A., Bideaux, Richard A., Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Celadonite	9.EC.15	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Unclassified
ⓘ	'Chabazite'	-
ⓘ	'Erionite Subgroup'	-	M₂[Al₄Si₁₄O₃₆] · 15H₂O
ⓘ	'Heulandite Subgroup'	-	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
ⓘ	'Phillipsite Subgroup'	-	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
H	ⓘ Erionite Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
H	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
H	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Calcite	CaCO₃
O	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
O	ⓘ Erionite Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
O	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
O	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Na	Sodium
Na	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Na	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Mg	Magnesium
Mg	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Al	Aluminium
Al	ⓘ Erionite Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
Al	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Al	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Si	Silicon
Si	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Si	ⓘ Erionite Subgroup	M₂[Al₄Si₁₄O₃₆] · 15H₂O
Si	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Si	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
K	Potassium
K	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
K	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
K	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Heulandite Subgroup	(Na/Ca/K)_5-6[Al_8-9 Si_27-28 O₇₂] · nH₂O
Ca	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O
Fe	Iron
Fe	ⓘ Celadonite	K(MgFe³⁺◻)(Si₄O₁₀)(OH)₂
Ba	Barium
Ba	ⓘ Phillipsite Subgroup	(Ca_0.5,K,Na,Ba_0.5)_4-7[Al_4-7Si_12-9O₃₂] ^. 12H₂O

Other Regions, Features and Areas containing this locality

North AmericaContinent

Sonoran DesertDesert
- San Pedro river valleyValley

North America PlateTectonic Plate

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