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Porter Creek, Healdsburg, Sonoma County, California, USAi
Regional Level Types
Porter CreekCreek
Healdsburg- not defined -
Sonoma CountyCounty
CaliforniaState
USACountry

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07325060017272051449547.jpg
Lawsonite

Porter Creek, Healdsburg, Sonoma County, California, USA
07325060017272051449547.jpg
Lawsonite

Porter Creek, Healdsburg, Sonoma County, California, USA
07325060017272051449547.jpg
Lawsonite

Porter Creek, Healdsburg, Sonoma County, California, USA
Latitude & Longitude (WGS84):
38° North , 122° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~10km
GRN:
N26W70
Type:
Creek
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Mindat Locality ID:
210824
Long-form identifier:
mindat:1:2:210824:0
GUID (UUID V4):
0


An occurrence located in the NE¼ sec. 19, T8N, R9W, MDM, 2 miles NW of River Road and 8½ miles SW of Healdsburg.

Mineralization is hosted in glaucophane schists.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

ⓘ Glaucophane
Formula: ◻[Na2][Mg3Al2]Si8O22(OH)2
Description: Occurs as glaucophane schist.
ⓘ Lawsonite
Formula: CaAl2(Si2O7)(OH)2 · H2O
Description: Occurs in vein to 1 cm wide with good quality crystals in cavities in glaucophane schists.
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: Occurs in glaucophane schists.
ⓘ 'Pumpellyite Subgroup'
Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
Colour: Dull green
Description: Occurs in glaucophane schist.
ⓘ Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘLawsonite9.BE.05CaAl2(Si2O7)(OH)2 · H2O
ⓘGlaucophane9.DE.25◻[Na2][Mg3Al2]Si8O22(OH)2
ⓘRiebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Pumpellyite Subgroup'-Ca2XAl2[Si2O6(OH)][SiO4](OH)2A

List of minerals for each chemical element

HHydrogen
Hⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Hⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Hⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
OOxygen
Oⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Oⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Oⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
NaSodium
Naⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Naⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
MgMagnesium
Mgⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
AlAluminium
Alⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Alⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
SiSilicon
Siⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Siⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Siⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Caⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
FeIron
Feⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Switzer, George S. (1951) Mineralogy of the California glaucophane schists. California Division of Mines and Geology Bulletin 161: 51-70pages 56-57, 63, 70
Irving, John, Magnus Vonsen & Forest A. Gonyer (1932), Pumpellyite from California: American Mineralogist: 17: 338-342; correction, p. 456 (1932): 338.
Geally, W.K. (1951) Gelogy of the Healdsburg quadrangle, California. California Division Mines Bulletin 161: 1
Murdoch, Joseph; Webb, Robert Wallace (1966) Minerals of California, Centennial Volume (1866-1966) - California Division of Mines and Geology, Bulletin 189. California Division of Mines and Geology. 559 pp.
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
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