Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Ben Lomond Mountain, Santa Cruz County, California, USAi
Regional Level Types
Ben Lomond MountainMountain
Santa Cruz CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
37° 7' 52'' North , 122° 10' 1'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Boulder Creek4,923 (2011)4.0km
Brookdale1,991 (2011)6.1km
Ben Lomond6,234 (2011)8.5km
Bonny Doon2,678 (2011)10.1km
Lompico1,137 (2011)10.5km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Santa Cruz Mineral and Gem SocietySanta Cruz, California21km
Peninsula Gem & Geology Society, Inc.Los Altos, California29km
Santa Clara Valley Gem & Mineral SocietySan Jose, California33km
Sequoia Gem and Mineral SocietyRedwood City, California40km
Mindat Locality ID:
211693
Long-form identifier:
mindat:1:2:211693:1
GUID (UUID V4):
0


A summit located 4.1 km (2.5 miles) W of Boulder Creek.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

6 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Actinolite-Tremolite Series'
Colour: Pale green
Description: Radiating sheaves 10 to 15 cm long.
'Asbestos'
Description: A variety of tremolite.
'Asbestos var. Mountain Leather'
Description: A variety of tremolite.
Chondrodite
Formula: Mg5(SiO4)2F2
Forsterite
Formula: Mg2(SiO4)
Description: Occurs as an accessory mineral in marble.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
'Scapolite'
Sepiolite
Formula: Mg4(Si6O15)(OH)2 · 6H2O
Description: Occurs as an accessory mineral in marble.
Sillimanite
Formula: Al2(SiO4)O
Habit: Stout prismatic; fibrous
Description: Occurs as crystals and fibrous tufts in pelitic schists at several localities (57A, 381, 383E, 349-352B, 217A).
Wollastonite
Formula: Ca3(Si3O9)
Description: Occurs in marble.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
Forsterite9.AC.05Mg2(SiO4)
Sillimanite9.AF.05Al2(SiO4)O
Chondrodite9.AF.45Mg5(SiO4)2F2
Wollastonite9.DG.05Ca3(Si3O9)
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Sepiolite9.EE.25Mg4(Si6O15)(OH)2 · 6H2O
Unclassified
'Asbestos'-
'Actinolite-Tremolite Series'-
'Scapolite'-
'Asbestos
var. Mountain Leather'
-

List of minerals for each chemical element

HHydrogen
H PhlogopiteKMg3(AlSi3O10)(OH)2
H SepioliteMg4(Si6O15)(OH)2 · 6H2O
H Actinolite-Tremolite Series
OOxygen
O ChondroditeMg5(SiO4)2F2
O ForsteriteMg2(SiO4)
O PhlogopiteKMg3(AlSi3O10)(OH)2
O SepioliteMg4(Si6O15)(OH)2 · 6H2O
O SillimaniteAl2(SiO4)O
O WollastoniteCa3(Si3O9)
O Actinolite-Tremolite Series
FFluorine
F ChondroditeMg5(SiO4)2F2
MgMagnesium
Mg ChondroditeMg5(SiO4)2F2
Mg ForsteriteMg2(SiO4)
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg SepioliteMg4(Si6O15)(OH)2 · 6H2O
Mg Actinolite-Tremolite Series
AlAluminium
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al SillimaniteAl2(SiO4)O
SiSilicon
Si ChondroditeMg5(SiO4)2F2
Si ForsteriteMg2(SiO4)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si SepioliteMg4(Si6O15)(OH)2 · 6H2O
Si SillimaniteAl2(SiO4)O
Si WollastoniteCa3(Si3O9)
Si Actinolite-Tremolite Series
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca WollastoniteCa3(Si3O9)
Ca Actinolite-Tremolite Series
FeIron
Fe Actinolite-Tremolite Series

Localities in this Region

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America Plate
Pacific PlateTectonic Plate
USA

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.

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